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Local Government International Exchange

Sister City Information

Finding a sister city

CLAIR supports local governments that are trying to form sister city relationships.
If you would like to post your local government's profile on our page listing foreign local governments that are looking for a Japanese sister city (Japanese only), you can send us the information we need using the following documents:


Please contact us for more information.

Japanese local governments looking for sister city relationships overseas

Here you can find out what local governments in Japan are looking for a sister city relationship. Click on the town name or scroll down to see an overview of their region.

Local governmentPrefectureDesired Country or Region
Goka Town Ibaraki Prefecture Asia, North America, Oceania
Hitachinaka City Ibaraki Prefecture United States of America
Boston, Massachusetts and
Los Angeles, California
Hitachinaka City Ibaraki Prefecture Belgium
Bruges, Vilvoorde, Antwerp, etc.
Zamami Village Okinawa United States

Goka Town, Ibaraki Prefecture

Population

7,834as of June 30, 2025

Area 23.11㎢(or 5,710 ac
Outline of Local Government

Located approximately 50 km northeast of central Tokyo, Goka Town sits at the southwestern tip of Ibaraki Prefecture, making it a gateway to the region.
Surrounded by four rivers, the town thrives in rice cultivation and boasts a rich agricultural landscape.
The area around the Ken-O Expressway's Goka Interchange hosts numerous logistics companies, alongside a popular roadside station. In the industrial zone, major factories contribute to a vibrant manufacturing sector.
Goka also emphasizes child-rearing support, featuring one public elementary and one junior high school operating under a unified nine-year education system.

Website(s) https://www.town.goka.lg.jp/ (Official GOKA Town website)
Desired Country/Region of Exchange Asia, North America, Oceania
Desired Characteristics of Exchange Partner

Educational exchange (elementary to junior high)

Tourism (arts & culture, street sports, RC, and more)

Industrial (agricultural and food, technology development, etc.)
Other PR Information

OHANAMI Goka Marche: Enjoy beautiful Sakura cherry blossoms at the town park in spring. Seasonal events are held during the blooming period.

Street sports park GOKA

A recreational space utilizing a 5,300 regulating pond, featuring equipment for skateboarding, 3x3 basketball, and slacklining. Admission free.


RC Park Goka

Experience the thrill of RC racing at this 5,000 facility featuring beginner, off-road, drift, and on-road courses--all free to enjoy.

Roadside Station GOKA

There is a dining area where visitors can enjoy meals featuring local specialties, along with a shop offering regional produce and souvenirs.
It serves as a comforting rest stop for drivers traveling on highways and national roads, and both for visitors and locals.


GOKA
Gourmet

At the "First Shin-Ibaraki Gourmet Grand Prix 2024," a passionate contest among municipalities to determine Ibaraki's new culinary landmark,Goka Town's 'Shin-Ibaraki Age Soba' won the inaugural Grand Prix in the general cuisine category, while the 'Sweet Poteffle' was selected as a finalist in the sweets category. (Available at Roadside Station GOKA)



Date Modified Dec 2025

Hitachinaka City (Ibaraki Prefecture)

Population 154,813 people (As of the end of October 2024) Area 100.26km2
Outline of Local Government

Hitachinaka City is a "manufacturing hub" with a population of 155,000. It is located on a flat plateau in the eastern part of central Ibaraki Prefecture, about 110 km northeast of Tokyo. To the east, it faces the majestic Pacific Ocean with a coastline of approximately 13 km. In the northeastern area, the development of the Hitachinaka District of Ibaraki Port, a core international port, is progressing. Regular Ro-Ro routes handling finished automobiles and construction machinery, as well as regular container routes connecting to North America, South Korea, and China, have been established. Consequently, the volume of cargo handled at the port is increasing year by year. It is also a port of call for large cruise ships that sail domestically and internationally. The port is directly connected to the Tokyo metropolitan area and the northern Kanto region by expressways, and has developed as the maritime gateway of the northern Kanto region, where people, goods, and information converge.

In terms of industry, our city hosts numerous factories of major companies involved in semiconductor and home appliance manufacturing, as well as large heavy machinery manufacturing enterprises. Additionally, seafood processing and agricultural production are thriving. Processed octopus products such as steamed octopus boast one of the highest production volumes in Japan, while dried sweet potatoes have the highest production volume in the country. Regarding tourism, many domestic and international tourists visit attractions such as the Hitachi Seaside Park, known for its nemophila flowers and kochia plants, and the Nakaminato Fish Market, where visitors can enjoy a variety of seafood. In 2023, the number of tourists visiting our city ranked first in the prefecture.

Sports is also popular in Hitachinaka city. Not only are citizens actively engaged in sports activities, but national-level competitions in various sports are also held here. Among them, the Katsuta National Marathon, which has been held more than 70 times, is a well-known and historic event. Top finishers from this marathon are sent to participate in the Boston Marathon.

Website(s) https://www.city.hitachinaka.lg.jp/ (Hitachinaka City)
Desired Country/Region of Exchange United States of America Boston, Massachusetts and Los Angeles, California
Desired Characteristics of Exchange Partner Exchange through sports, commerce and industry
Other PR Information

・We send top finishers from the Katsuta National Marathon to participate in the Boston Marathon.
・The Hitachinaka Chamber of Commerce and Industry opened its Los Angeles local office in August 2015. In 2025, it will celebrate its 10th anniversary

https://youtu.be/yihmXn6yEM4?si=3_6oP68cBySFw626(Hitachinaka City -HITACHINAKA CITY- VISIT IBARAKI,JAPAN GUIDE/ IBAKIRA TV)
https://youtu.be/IlZbJK5pFzg?si=EdYigrC7kaeBXlPs(Hitachinaka City Tourism Promotion Video for Foreigners/Hitachinaka Tourism)







Date Modified Feb 2025

Hitachinaka City (Ibaraki Prefecture)

Population 154,813 people (As of the end of October 2024) Area 100.26km2
Outline of Local Government

Hitachinaka City is a "manufacturing hub" with a population of 155,000. It is located on a flat plateau in the eastern part of central Ibaraki Prefecture, about 110 km northeast of Tokyo. To the east, it faces the majestic Pacific Ocean with a coastline of approximately 13 km. In the northeastern area, the development of the Hitachinaka District of Ibaraki Port, a core international port, is progressing. Regular Ro-Ro routes handling finished automobiles and construction machinery, as well as regular container routes connecting to North America, South Korea, and China, have been established. Consequently, the volume of cargo handled at the port is increasing year by year. It is also a port of call for large cruise ships that sail domestically and internationally. The port is directly connected to the Tokyo metropolitan area and the northern Kanto region by expressways, and has developed as the maritime gateway of the northern Kanto region, where people, goods, and information converge.

In terms of industry, our city hosts numerous factories of major companies involved in semiconductor and home appliance manufacturing, as well as large heavy machinery manufacturing enterprises. Additionally, seafood processing and agricultural production are thriving. Processed octopus products such as steamed octopus boast one of the highest production volumes in Japan, while dried sweet potatoes have the highest production volume in the country. Regarding tourism, many domestic and international tourists visit attractions such as the Hitachi Seaside Park, known for its nemophila flowers and kochia plants, and the Nakaminato Fish Market, where visitors can enjoy a variety of seafood. In 2023, the number of tourists visiting our city ranked first in the prefecture.

Website(s) https://www.city.hitachinaka.lg.jp/ (Hitachinaka City)
Desired Country/Region of Exchange Belgium
Bruges, Vilvoorde, Antwerp, etc
Desired Characteristics of Exchange Partner Exchange through economy and industry
Exchange through sports such as soccer and cycling
Other PR Information

・In support of the 2020 Tokyo Olympics, our city began exchanges with Belgian team as a pre-camp site. However, due to the COVID-19 pandemic, exchange programs were canceled from fiscal year 2021 onwards.

・The Hitachinaka District of Ibaraki Port is connected to the Port of Zeebrugge by a regular Ro-Ro route to Western Europe. Additionally, the hinterland of the Hitachinaka Port area is home to Komatsu's mother factory. In fiscal year 2015, the then-mayor and other officials of Hitachinaka city visited the Port of Zeebrugge and Komatsu Europe Ltd.

https://youtu.be/yihmXn6yEM4?si=3_6oP68cBySFw626(Hitachinaka City -HITACHINAKA CITY- VISIT IBARAKI,JAPAN GUIDE/ IBAKIRA TV)
https://youtu.be/IlZbJK5pFzg?si=EdYigrC7kaeBXlPs(Hitachinaka City Tourism Promotion Video for Foreigners/Hitachinaka Tourism)

Date Modified Feb 2025

Zamami Village (Okinawa Prefecture)

Population 855 Area 16.74km2
Outline of Local Government

The Kerama Islands are a group of subtropical islands in the East China Sea located about 40km west of the prefectural capital of Naha, taking just 50 minutes by high-speed boat. Zamami Village is a remote island village making up the western-half of these islands. It is known for its beautiful underwater scenery and crystal-clear waters, world-class coral reefs and a variety of tropical fish, attracting divers throughout the year. Zamami Village is made up of three inhabited islands--Zamami, Aka, and Geruma--all covered with subtropical forests and home to the Kerama Deer, a nationally protected species. In March of 2014, Zamami Village along with the neighboring Tokashiki Village were designated as the Keramashoto National Park.

Website(s)

https://www.vill.zamami.okinawa.jp/
https://www.visit-zamami.com/english-information/ (Tourist Association)

Desired Country/Region of Exchange United States
Desired Characteristics of Exchange Partner

Region with similar economy led by tourism and with similar environment located in a coastal area.
Open to conducting exchange and homestays between elementary and middle school students.

Other PR Information https://youtu.be/YPSR81836-Y (PR video)










Natural Environment

The closest coral reef paradise from mainland Okinawa
The inland sea, with its white sand beaches and lush green islands dotted with coral reefs, attracts divers with its beautiful underwater scenery. In 2005, the inland sea was registered as a globally important site under the Ramsar Convention. During the summer on nights of a full moon, the mysterious sight of coral spawning en mass can be seen, and the area encompassed by the Kerama Sea is called the "home of coral reefs." In 2014, the area was designated as a national park and expanded to cover the entirety of the Kerama Islands.

March 2014, Designation as the Keramashoto National Park
In March of 2006, the villages of Zamami and Tokashiki, which share the Kerama Sea, began promoting conservation of the sea area in both the public and private sectors, launching the Kerama Natural Environment Council. Led by professional divers, the the Kerama Environment Council has been working to protect the coral reefs, removing crown-of-thorns starfish and other pests that eat away at the coral.

In 2012, based on the Ecotourism Protection Law, the Kerama Region Ecotourism Promotion Plan was the second in Japan to be recognized (It was the first plan to receive designation for specific nature tourism resources).

March, 2024Designation as the Keramashoto National Park (the first designation in 27 years. The 31st National Park of Japan.)

A Treasure Trove of National Monuments    
Ryukyu Robin           (Designation January 23, 1970
Coenobita hermit crab      (Designation November 12, 1970
Crow Pidgeon           (Designation May 19, 1971
Kerama Deer and their habitat Designation May 15, 1972
Sengoku's Gecko         (Designation November 9, 1978) 

Traditional Festivals and Events

Island of Faith and Religious Rituals
Within Okinawa Prefecture, the islands of Zamami Village have been said to be as faithful as Kutaka Island. Although some festivals have been lost, the communities within Zamami continue to carry out several festivals throughout the year.


The "Flowing Boat" festival on March 3rd of the lunar month. Small boats flying large fishing flags gather in the sea around the uninhabited islands and parade around the inland sea before circling Zamami Port. Onboard, sanshin and parlanku (a type of taiko drum) is played while people sing. People of all ages and genders dance a traditional Okinawa dance around the port and on the ships.



"Kaijinsai," a traditional event held around August 20th of the lunar calendar to pray to the god of the sea for bountiful catches and safety at sea, is held in accordance with the traditions of the communities of the three islands. The photo shows the festival in Zamami. Villagers perform a michijune (parade) with the miruku-kami that appears at the place of worship, offering dances where they go.

Social Events
In Zamami Village, several ocean-related events and exchange events with tourists are carried out over the course of the year, including the whale watching festival, sabani race, Zamami yacht race, and SUP tournament, encouraging tourists to visit the island.


Mt. Takatsuki Park...Located on the southern-side of Zamami Island 137 m above sea level, Mt. Takatsuki has an observatory and walking trails. The observatory overlooks not only the Kerama Archipelago, but also mainland Okinawa, Aguni Island, Tonaki Island, and Kume Island, making it the most scenic spot in the village.  (Zamami Island)







Sightseeing




Tower of Peace...Zamami Village was the first place American troops landed at during the Battle of Okinawa on March 26, 1945. Many people lost their lives during the war. At the Tower of Peace, halfway up the slope of Mt. Takatsuki, 1,220 military and civilian personnel are enshrined as guardians of peace. (Zamami Island)


Furuzamami Beach...The beautiful white sand beach, made from fragments of coral, was rated 2 stars by the Michelin Green Guide. Here, visitors can swim with the many tropical fish that live in the coral reefs. From April to November lifeguards are stationed on the beach, and underwater masks, snorkels, fins, and other equipment can be rented, and a snack bar is open. (Zamami Island)


National Important Cultural Property Takara House...The Takara House, with its beautiful red-tile roof and unique stone masonry surrounding the house, is a valuable example of a traditional Okinawa family house, with the main structure facing south with a hipped roof and a standalone wall at the front (hinpun). It was built in the
late 19th century by the head of the family, who was a captain on a trading ship with Tang Dynasty China. (Geruma Island)


Nishibama Beach
Located on the north side of Aka Island, similar to Zamami Island's Furuzamami Beach, snorkeling can be enjoyed at this beautiful beach. From April to November lifeguards are stationed on the beach, and rentals are available and a snack bar is open. (Aka Island)


Kerama Deer...The Kerama deer, designated as a National Monument ofJapan, inhabit Geruma Island and Aka Island. It is said to be a subspecies of the Japanese deer, with a small body (up to about 75 kg) and dark coat color. They can be seen in the mountains during 
the daytime and around hamlets in the evening Places they can be seen...Aka Island, Geruma Island

Experiences in Zamami Village


Diving

Snorkeling...Even without heavy diving equipment, you can fully enjoy sights of schools of tropical fish swimming in a sea of coral with only an underwater mask, snorkel, and fins. The waters of Zamami Village are rich in both variety and number of tropical fish, and even small children and the elderly can enjoy impressive snorkeling experiences at Zamami Island's Furuzamami Beach and Aka Island's Nishibama Beach. In recent years, snorkeling by boat and snorkeling on uninhabited islands have become very popular.


Sea Kayak...Non-motorized sea kayaks are an ocean-friendly transportation type with a small environmental footprint. In recent years, Zamami Village has become a popular kayaking destination. While paddling the crystal-clear waters and gazing at the green islands dotting the inland waters of Kerama, kayakers can feel a oneness with nature.


Whale Watching...Every winter, the calm waters of Zamami Village are visited by pods of humpback wales for breeding activities.
Their exciting breaching and other performances impress onlookers. Under the rules of the Zamami Village Whale Watching Association, whale watching is conducted without disturbing the lives of the whales.





SUP...A sport gaining popularity worldwide, SUP, an abbreviation for standup paddle-boarding, is another activity that can be enjoyed in Zamami. Paddling from a standup position, you can clearly see the coral reef below the surface of the sea as well as the lush green island landscape.


Date Modified Sep 2024




For Enquiries
International Exchange Division
Tel : +81-3-5213-1723
Fax : +81-3-5213-1742
Email : shimai@clair.or.jp
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