Four-sided stone tower, Daiganin, Tateyama City
Article

12205 ／ たてやまし

Chiba Prefecture

Tateyama City

One invocation in four scripts.

Four-sided stone tower, Daiganin

Photo by Abasaa (Public domain)

01 ／ Fossil coral

About 1 km inland on a hillside,fossil coral about 6,000 years old.

Fossil coral in Tateyama City
Photo by Almandine (CC BY-SA 3.0)

The city explains that coral that lived about 6,000 years ago survives as fossils about 1 km inland from the coast, at roughly 20 m above sea level in Numa. Crustal uplift after the Jomon transgression left it on the hillside. Numa-layer coral fossils are found widely across Boso, with 75 species confirmed.

  • Fossil coral about 6,000 years old
  • About 1 km inland, roughly 20 m elevation
  • Prefectural Natural Monument (Numa, Tateyama)

02 ／ Boat coffins

Along the cave wall,12 or more boat coffins lay in rows.

Boat coffins in Tateyama City
Photo by 海山猫 (CC BY-SA 4.0)

Excavations from 1993 to 1998 at the Oterayama cave site confirmed at least 12 boat coffins of the Kofun period. Their bows faced the cave mouth, toward the sea, and they are thought to be reused dugout canoes. It is a city-designated historic site.

  • 12 or more Kofun-period boat coffins
  • Cedar wood
  • Used as a burial place for about 250 years

03 ／ Taro festival

About 90 taro, heaped into a mountain,are offered to the village deity as a pair.

At the annual festival of the village shrine in Mona, before farm work begins, a pair of large offerings is made, each decorating about 90 taro heaped into a mountain shape, and dedicated to the shrine. Taro is grown by Tsumi Banna Kama units of two households, and prepared at the house of the year's duty holder.

  • About 90 taro heaped in a mountain shape
  • Tsumi Banna Kama units of two households
  • Nationally designated Important Intangible Folk Cultural Property (2005)

Tateyama City from the sky

Now and 1974–78. Tap a photo to zoom in.

Wide (about 6 km across)

Close (about 1.5 km across)

2012 (shot FY2012)Shot 1974–78

Source: Geospatial Information Authority of Japan (GSI) GSI Tiles（年度別空中写真（2012年度）／国土画像情報（第一期：1974〜1978年撮影））

Open in GSI Maps (now)Open in GSI Maps (1974–78)

Living here

110 minutes from Tokyo Station by express bus.

  • about 50,000 people
  • 2 hours to a city centre

Tateyama Station is 110 minutes from Tokyo Station's Yaesu South Exit on the JR Bus Kanto Boso Nanohana, and 120 minutes from Busta Shinjuku on the Shinjuku Nanohana. In the timetable revised on 1 October 2026, down services run daily. By rail, the Uchibo Line has no regular through service from Tokyo or Shinjuku.

People living here
45,153people
19952020

−4.9% since 2015

52,880 → 45,153

Area
110.05km²

62.29km² of it habitable

2024

Households
20,272households

2.2 people per household

2020

Rent (average for rentals)
48,933yen

National average 60,630 yen

2023

Healthcare
5 hospitals ／ 43 clinics

10.6 per 10,000 people

2023

Area110.05km²Habitable land62.29km² ／ 57%
Area and habitable land at the same scalee-Stat B1101 / B1103
Children waiting for childcare
—9 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.

Tateyama City in Japan34.997°N 139.870°E
OsakaTateyama City
Tateyama Station
館山駅2022
  • to TokyoHighway bus110min
  • to ShinjukuHighway bus120min

Travel times follow JRバス関東のデジタル時刻表『東京・新宿～木更津羽鳥野・上総湊・館山・安房白浜 房総なのはな号／新宿なのはな号』の下り（全日）。2026年10月1日改正。東京駅八重洲南口・バスタ新宿（新宿駅新南口）の発と、館山駅の着の差。運転日の注記は無い『全日』の表。座席指定制（乗車券を事前に買う） (checked 2026-10-22). They vary by time of day.

Shape

Borders 1 municipalities.

Territory of Tateyama City
Boundaries: National Land Numerical Information (Administrative Area Data), MLIT. Processed by Machigatari.Lakes: National Land Numerical Information (Lake Data), MLIT. Processed by Machigatari. Prepared with the approval of the Director-General of the Geospatial Information Authority of Japan, using its Digital Map 25000 (Spatial Data Framework) and Digital Map 25000 (Place Names and Public Facilities). (承認番号 平27情使、第585号)

North to south

16.2km

Minamiboso City

Tateyama City isthis kind of town.

  1. 01Daiganin's four-sided stone tower, erected in 1624, carries the same invocation in Siddham, seal script, Hangul and Japanese kanji; it is a prefecturally designated cultural property
  2. 02Coral fossils about 6,000 years old lie on an inland hillside in Numa, and boat coffins of the Kofun period were confirmed in the Oterayama cave
  3. 03The Mona taro festival offers heaps of about 90 taro, and is a nationally designated Important Intangible Folk Cultural Property

See the town as it is now.

Source: Wikidata (P2002, P2003, P2013, P2397)

If something caught your eye, ask the town itself.

Tateyama City official site ↗Wikipedia ↗

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Next town Chiba Prefecture Kisarazu City →A gold bell's discovery named the tomb.