Registered Tangible Cultural Properties of Japan

International Christian University Taizanso Kofukyo, a thatched 1925 tea house built around Matsuura Takeshiro's One-Mat Room of donated temple timber, in Mitaka.

International Christian University Taizanso Garage, a clapboard car house of about 1936 just inside the villa gate, a registered relic of suburban motoring.

International Christian University Taizanso Shoin, a tiled 1936 reception wing with two tatami rooms and verandas, repaired after the 1966 fire and used for tea.

International Christian University Taizanso Waiting Room, a late Edo thatched tea building said to be the Ikeda lords' Chitei, used as the waiting room for Kofukyo.

Built in 1925, the National Astronomical Observatory Main Gate has four concrete posts faced in irregular stone, fluted capitals and a lamp over the central opening.

Built in 1930 to hold the observatory's books, this two-storey concrete block at Mitaka in Tokyo shows scratch tile, slim continuous canopies and one round window.

Completed in 1924 at Mitaka in Tokyo, this half-round concrete room holds a French meridian circle of 1903 on a foundation isolated from the building itself.

Standing 100 metres south of the meridian circle at Mitaka in Tokyo, this 1925 concrete box of 7.3 square metres exists to hold a single reference mark.

Completed in 1921, the oldest observing building on the Mitaka campus holds a 20-centimetre Zeiss refractor on a weight-driven mounting under a hand-cranked dome.

Built in 1926 and 19.5 metres tall, this Mitaka dome holds Japan's largest refractor at 65 centimetres and an observing floor that once rose and fell like a lift.

Standing 100 metres north of the meridian circle at Mitaka in Tokyo, this 1925 concrete box of 7.2 square metres is the twin of the mark room to the south.

Completed in 1930 at Mitaka in Tokyo, the tower known as the Einstein Tower is itself the telescope tube, sending sunlight 20 metres down to a basement spectrograph.

Built in 1924, the National Astronomical Observatory Guard House is the only timber structure among the ten registered entries on the campus, with half-timbering.

Built in 1925 at Mitaka in Tokyo, this small concrete room has a gable roof on rails that slides open, and now displays the 1880 Repsold transit instrument.

Kosugiyu in Koenji, Tokyo, a public bath of 1933 north of the station, has a dormer gable, a cusped-gable porch and a bath hall with clerestory windows and a mural.

The Gotoh Museum main building in Setagaya, Tokyo, built in 1960 to designs by Yoshida Isoya, recalls Heian palaces in concrete with round posts and deep eaves.

Hiroo Elementary School in Shibuya is a 1932 reinforced-concrete schoolhouse from Tokyo's post-earthquake rebuilding, still in use with a rooftop fire-watch tower.

A 1932 Western house in Tokyo's Sendagi by architect Yabe Matakichi: German-influenced design, stained glass of warships, and links to a beriberi doctor.

The Shimura Residence's registered gate and 57-meter Oya-stone wall in Seijo, Tokyo, built around 1939 and topped with a hedge, recall how the suburb was planned.

The Shimoda Residence in Nishitokyo housed Tanashi's hereditary headmen. A late-Edo, copper-roofed timber farmhouse, it is the city's oldest, registered in 2019.

The complete kokuhō catalogue — browse by prefecture, period, and category.

Nationwide jūyō bunkazai — architecture, sculpture, painting, crafts, and documents.

UNESCO-inscribed cultural and natural sites across the archipelago.