10205 ／ おおたし
Gunma PrefectureNunnery granted right to end marriages
Enkiri-dera Mantoku-ji site01 ／ Kanayama Castle site
This mountain castle was built on Mt. Kanayama (239 m); construction began in 1469 and it was abandoned in 1590. The city writes that its extensive use of stone walls and stone pavement stands out. The restored Otemon gate area and Tsukinoike pond lie along the visitors' path.
02 ／ Sogen-ji Sazae-do
This Edo-period Kannon hall is about 16.3 m wide and deep and about 16.8 m high. It houses Kannon statues for 100 pilgrimage temples in Chichibu, Bando and Saigoku, which visitors circle clockwise in one direction, hence the name sazae-do (turban-shell hall). It became an Important Cultural Property in 2018.
03 ／ Kozuke Province Nitta District Office site
This is the site of the ancient Nitta District government office, a national historic site. Its central compound was about 90 m square (normally 50 m), with long buildings about 50 m in length on all four sides. From excavated artifacts it is thought to date from the late 7th to the late 9th century.
Now and 1974–78. Tap a photo to zoom in.
Wide (about 6 km across)
Close (about 1.5 km across)
Now (shot January 2023)Shot 1974–78
Source: Geospatial Information Authority of Japan (GSI) GSI Tiles（全国最新写真（シームレス）／国土画像情報（第一期：1974〜1978年撮影））
Living here
The city covers 175.54 km², with the Tone River to the south and the Watarase River to the north; apart from Mt. Kanayama (239 m) and the Hachioji hills, the land is mostly flat. The Tobu limited express Ryomo takes 82 minutes at the fastest from Asakusa to Ota Station, and 70 from Kita-Senju, with no change of trains (the city says about 80 minutes from Asakusa). Ota, Ojima, Nitta and Yabuzukahonmachi merged in 2005.
+1.5% since 2015
213,299 → 223,014
166.57km² of it habitable
2024
2.4 people per household
2020
National average 60,630 yen
2023
7.3 per 10,000 people
2023
Population from 2005 onward (municipal boundary changed).2005-03-28 に合併。2005年調査から市域が変わっている。
These 3 items are waiting on a nationwide data source. We do not fill them with estimates.
ACCESS
Travel times follow 東武鉄道「特急列車時刻表（浅草-館林・赤城・葛生・伊勢崎 下り）」PDF（2026.3.14改正。https://www.tobu.co.jp/pdf/timetable/time-table_02_kudari.pdf）の浅草発・北千住発・太田着の列を画像にして目で読んだ（2026-10-21）。りょうもう17号は浅草13:50発・北千住14:02発・太田15:12着（乗り換えなし）。太田に停まる浅草発の特急（りょうもう・リバティりょうもう）は浅草→太田82〜95分で、最短は17号の82分。北千住→太田は最短70分（17号。ほかは72分以上）。PDF は1枚の表で運転日の注記が無い (checked 2026-10-21). They vary by time of day.
Shape
North to south
15.8km
If something caught your eye, ask the town itself.
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