Osakasayama City

Tomb coffins were reused as sluices.

Coffins reused as stone sluices

01 ／ Civil engineering heritage

Pond water and foot trafficpass under the railway through brick arches.

Seven brick culverts lie in the embankment of the Koya Line between Sayama and Osakasayamashi stations. When the railway opened in 1898 (Meiji 31), they were built as waterways and passages so that the flow of water from Sayamaike Pond and the movement of people would not be cut off. Five can be walked through and two carry water only. No. 7 is a skew arch known as nejiri-manpo.

7 culverts
Railway opened in 1898
Selected Civil Engineering Heritage, 2020

02 ／ Intake tower

A tower from 1927 (Showa 2)now stands inside the museum.

Built of reinforced concrete, it is 3.03 m in diameter and 10.63 m high. It was set up as an intake tower to replace the wooden conduit, removed when Sayamaike Pond was turned into a dam, and moved to Sayamaike Museum in 1998 (Heisei 10). Locals are said to have called it the "Tower".

Showa 2 (1927)
10.63 m high
Prefectural registered cultural property, 2025

03 ／ Residence site

Descendants of the Odawara Hojobuilt a residence beside Sayamaike Pond.

Hojo Ujimori, together with the lands left by his father Ujinori, was restored to daimyo rank, and the second lord, Ujinobu, built the residence in Ikejiri Village. The Sayama Domain lasted twelve generations, until its abolition in 1869 (Meiji 2). The site is now residential, but the layout of the compound shown on the old maps can still be seen.

12 generations
Abolished in 1869
Maps of the upper and lower compounds designated by the city

Living here

23 minutes from Namba by Section Express.

about 60,000 people
30 min to a city centre

Osakasayamashi Station on the Koya Line is 23 minutes from Namba by Section Express. City Hall is a 3-minute walk from the station, and the city also has Sayama and Kongo stations.

People living here: 58,435people
Area: 11.92km²
Households: 24,216households
Rent (average for rentals): 53,029yen
Healthcare: 7 hospitals ／ 56 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.

Osakasayama City in Japan34.504°N 135.556°E

to OsakaNankai Koya Line section express23min

Travel times follow 南海電鉄『ダイヤ検索』（kensaku.nankai.co.jp/pc/N1・N2。事業者公式の経路検索）を、2026-10-14（水）と 2026-10-18（日）の05:00〜23:30、30分おきの出発時刻で引き、『乗換 0回』の経路で難波『発』→大阪狭山市『着』（と大阪狭山市『発』→難波『着』）の所要を数えた。毎日運転の最速を採った。 (checked 2026-10-14). They vary by time of day.

Shape

Borders 3 municipalities.

Territory of Osakasayama City

Boundaries: National Land Numerical Information (N03)

North to south

7.0km

堺市, 富田林市, 河内長野市

Osakasayama City isthis kind of town.

01When the monk Chogen renovated Sayamaike Pond in the Kamakura period, coffins carried from nearby tombs were worked into stone sluice pipes. A stone-conduit lid designated by the prefecture and a group of coffins designated by the city are shown in Sayamaike Museum
02Seven brick culverts lie in the Koya Line embankment, and the pond's old intake tower has been moved into the museum. The residence of the Sayama Domain, built by descendants of the Odawara Hojo, stood beside the pond
03The former residence of the Tanaka family, the pond keepers, was added to the national historic site as an attached property, and the city records that Ono grapes have been grown for over 100 years. Namba is 23 minutes away by Section Express

See the town as it is now.

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

If something caught your eye, ask the town itself.

Osakasayama City official site ↗Wikipedia ↗