Izunokuni City

A town where the furnace that cast cannon still stands.

Nirayama Reverberatory Furnace

Photo by Wiiii (CC BY-SA 3.0)

01 ／ World Heritage

The furnace that made cannon,the only one left in Japan.

Proposed by the local magistrate Egawa Hidetatsu to cast cannon for the Shinagawa sea forts, and completed by his son Hidetoshi in 1857, the Nirayama Reverberatory Furnace stands about 15.7 m tall. It is the only furnace of its kind in Japan that actually operated and survives, and became World Heritage in 2015. From the tea field opposite, it lines up with Mount Fuji.

Completed 1857
About 15.7 m tall
World Heritage 2015

02 ／ Strawberries

Winter to spring,picking strawberries.

With wide growing areas, the city is one of the leading strawberry producers in the prefecture. From mid-December to early May you can pick them at farms across the city. The main varieties are Beni-hoppe, Akihime and Kirapika, and you can taste the difference.

Mid-December to early May
Mainly 3 varieties
A leading producer in the prefecture

03 ／ History

Yoritomo, Unkei and Sounwere all here.

願成就院史跡.jpg — Photo by KCyamazaki (CC BY-SA 4.0)

Hirugakojima (蛭ヶ島), linked to Minamoto no Yoritomo and Hojo Masako; Ganjoju-in (願成就院), home to National Treasure statues by Unkei; and Nirayama Castle, where Hojo Soun lived to the end. Traces of people who moved Japanese history sit together in one city.

National Treasures by Unkei
Hirugakojima
Nirayama Castle

Living here

2 hours to Tokyo on the Odoriko.

about 50,000 people
2 hours to a city centre

The limited express Odoriko runs from Tokyo Station to Izu-Nagaoka in about 2 hours. By Shinkansen, change at Mishima to the Izuhakone Railway, about 20 minutes from Mishima to Izu-Nagaoka.

People living here: 46,804people
Area: 94.62km²
Households: 19,085households
Rent (average for rentals): 48,073yen
Healthcare: 6 hospitals ／ 29 clinics

Area and habitable land at the same scalee-Stat B1101 / B1103

Children waiting for childcare: —7 nurseries and similar
Home purchase subsidy: —
Average annual temperature: —

These 3 items are waiting on a nationwide data source. We do not fill them with estimates.

ACCESS

Where you can go from here.

Izunokuni City in Japan35.028°N 138.929°E

to TokyoLtd. exp. Odoriko120min

Travel times follow 市公式「伊豆の国市へのアクセス」（2025-09-25 更新）に載っている値 (checked 2026-09-24). They vary by time of day.

Shape

Borders 5 municipalities.

Territory of Izunokuni City

Boundaries: National Land Numerical Information (N03)

North to south

10.4km

伊豆市, 函南町, 沼津市, 熱海市, 伊東市

Izunokuni City isthis kind of town.

01The World Heritage Nirayama Reverberatory Furnace, the only operated furnace of its kind left in Japan
02Strawberry picking from mid-December to early May
03Sites linked to Yoritomo, Unkei and Hojo Soun, all in one city

If something caught your eye, ask the town itself.

Izunokuni City official site ↗Wikipedia ↗