Iwakuni: US Base City & Culture, Yamaguchi

Kintaikyo Bridge in Iwakuni City, Yamaguchi Prefecture, is a five-arch wooden bridge spanning the clear Nishiki River, counted as one of Japan's Three Famous Bridges. The graceful curves of the arches, linked in a flowing line between the piers, are a work of formal beauty gathering the finest of Japanese wooden construction technique, and the bridge is designated a National Place of Scenic Beauty. The view with Iwakuni Castle rising behind it is the landscape that symbolizes Iwakuni, welcoming many visitors as it changes expression with the seasons.

Iwakuni: A City Where Kintaikyo Bridge and a US Military Base Coexist

Iwakuni City in Yamaguchi Prefecture is a special city where the contrasting presences of Kintaikyo Bridge, a famous Edo-period bridge, and the modern US Marine Corps Air Station Iwakuni coexist. A unique environment has been created where Japanese traditional culture and contemporary American culture intersect.

The Unfalling Bridge Built by the Iwakuni Domain

Kintaikyo was first built in the latter half of the 17th century during the Edo period by the Kikkawa family, lords of the Iwakuni domain. The Nishiki River flooded again and again, and bridge after bridge was swept away in a long run of hardship. Seeking a structure that could withstand being washed out, the builders piled up one innovation after another, and what emerged was the five-arch structure that distributes the load borne by the piers. Built with a traditional technique that joins timbers together using almost no nails, it long escaped being washed away thereafter. The present bridge, too, has been rebuilt in the inherited traditional technique, carrying the craftsmen's skill down to today.

Iwakuni Castle, the Ropeway, and the Streets Below the Castle

Beyond Kintaikyo Bridge spreads a castle town that still retains traces of the domain era. Iwakuni Castle, standing on the mountaintop, can be reached by ropeway, and from the keep you can enjoy a magnificent view stretching over Kintaikyo Bridge, the Nishiki River and the Seto Inland Sea. Kikko Park at the foot of the bridge is dotted with sights such as the remains of samurai residences and the White Snake Shrine, making it ideal for a historical stroll. Local specialties are another pleasure, including the famous Iwakuni-zushi (pressed sushi) and soft-serve ice cream. When crossing the bridge, walking while feeling the texture of the wood under your feet is also recommended.

Iwakuni Friendship Day

"Iwakuni Friendship Day" held every May is a once-a-year event where the US Marine Corps Air Station Iwakuni is opened to the general public. Military aircraft displays, aerobatic flying (air shows), American food stalls, and Japanese-American cultural exchange programs are held. It is a popular event drawing over 100,000 visitors every year.

Iwakuni Castle and White Snake Village

Iwakuni Castle near Kintaikyo Bridge can be reached by mountaintop ropeway. Below the castle is "Shirasaki Village" where Iwakuni's native white snakes (albino specimens of Japanese rat snakes) are kept and displayed.

Iwakuni Sushi

"Iwakuni Sushi," a local dish of Iwakuni, is pressed sushi with toppings layered on vinegared rice in a wooden box and pressed with a weight. Said to have originated as portable military food during the domain era, it is served at festivals and celebratory occasions.

Best Season and Access

Kintaikyo Bridge is beautiful in each of the four seasons, and whenever you visit you will meet a different charm: cherry blossoms in spring, fresh greenery in early summer, foliage in autumn, and a dusting of snow in winter. The cherry blossom season in spring and the foliage season in autumn are especially popular. For access, take a bus from "Iwakuni Station" on the JR Sanyo Main Line or "Shin-Iwakuni Station" on the Sanyo Shinkansen and get off at "Kintaikyo." Access from the direction of Hiroshima is also good, and many people visit in combination with sightseeing on Miyajima. A toll is required to cross the bridge, and set tickets combined with the Iwakuni Castle Ropeway are also available.

Access

Approximately 15 minutes by bus from JR Iwakuni Station to Kintaikyo Bridge. Accessible from Hiroshima by Shinkansen (Shin-Iwakuni Station) or local train.

Practical Information on Iwakuni's Events

Kintaikyo Festival

• Date: Fixed on April 29 every year. In 2026 the 48th edition was held on Wednesday, April 29 (a national holiday)
• Content: A period festival in which a daimyo procession and yakko dochu, recreating the alternate attendance processions of the Edo period, parade across Kintaikyo Bridge. There are also demonstrations by the Iwakuni Domain Gun Corps and performances of Iwakuni taiko drumming
• Venue: Around Kintaikyo Bridge (near Iwakuni 1-chome, Iwakuni City, Yamaguchi Prefecture), from Iwakuni Elementary School to Kikko Park
• Traffic restrictions: Extensive traffic restrictions are in place on the day. Visitors are asked to use public transportation, and the detailed areas and time bands can be checked in the PDF published by the Iwakuni City Tourist Association
• Inquiries: Kintaikyo Festival Executive Committee (within the Iwakuni City Tourist Association) 0827-41-2037

Nishikigawa Water Festival (August)

• Important: The large-scale "Nishikigawa Water Festival Fireworks Display" of the past has been cancelled since fiscal 2022 and is no longer held. August is now designated "Nishikigawa Water Festival Month," and the format has changed to a variety of events linked with the "Kintaikyo cormorant fishing" (2026 marks the 57th edition)
• Mini fireworks: Two-minute mini fireworks are launched on a total of 12 days. The launch time is around 20:05, and the launch site is downstream of the riverbed below Kintaikyo Bridge
• Inquiries: Nishikigawa Water Festival Executive Committee Secretariat 0827-41-2037

Iwakuni Air Base Friendship Day (Japan-US Friendship Day)

• Date: The 47th edition was held on Sunday, May 3, 2026
• Hours: 9:00–17:00 (general opening from 7:00)
• Venue: JMSDF Iwakuni Air Base (2-chome Misumi-cho, Iwakuni City, Yamaguchi Prefecture 740-8555)
• Nearest station: 30 minutes on foot or 5 minutes by bus from JR Iwakuni Station. Shuttle buses run from Iwakuni Station
• Admission: There are free viewing areas. Special viewing seats and photo areas are paid
• Restrictions on what you may bring: Bags are inspected on entry, and prohibited items brought in will be confiscated. Confiscated items are not returned. Prohibited items are announced on the official social media accounts, so please check in advance
• Entry conditions: Children aged 12 and under do not need to show identification, but must be accompanied by an adult
• Parking: There is no dedicated parking inside or around the base. Visitors are asked to use public transportation
• Traffic restrictions: These are implemented to ease congestion and prevent illegal parking
• In case of rain: The status of the event can be checked on the official website and the official Facebook page

*For all of these events, please check official PDFs and other sources for the specific launch days of the mini fireworks, the detailed event times of the Kintaikyo Festival, and parking. The 2027 dates have not been announced (the Kintaikyo Festival is held on April 29 every year).*

(Sources: Iwakuni City Tourist Association, Iwakuni City official website, Yamaguchi Prefecture official tourism website "Oidemase Yamaguchi," JMSDF Iwakuni Air Base)