Kyū-Iwasaki-tei Gardens

Interesting facts

1. 1

   The main Western-style building was completed in 1896 as the residence for Iwasaki Hisaya.

2. 2

   Josiah Conder, who designed the building, is considered the 'father of modern Japanese architecture' and taught at the Imperial College of Engineering.

3. 3

   The billiard house is detached from the main residence and is connected by an underground passage.

4. 4

   The interior of the main building features authentic 19th-century 'kinkarakami' (leather paper) wall coverings.

5. 5

   The property transitioned from a private residence to a public cultural site managed by the Tokyo Metropolitan Park Association.

6. 6

   The garden layout was significantly altered from its original 1896 state, though the path around the pond retains elements of the Edo-period design from the previous landowner.

7. 7

   The estate once contained over 20 buildings, but the majority were lost to time or removed during subsequent years of occupancy.

Overview

Kyū-Iwasaki-tei Gardens is a designated Important Cultural Property featuring the surviving structures of the former residence of the Iwasaki family, founders of the Mitsubishi conglomerate. The estate includes a Western-style wooden house designed by Josiah Conder, a Swiss-style billiard house, and a Japanese-style residence. The Western building is characterized by its Jacobean-style exterior and interior patterns influenced by Islamic and English motifs. Unlike typical gardens of the era, the grounds retain a mix of a flat lawn area and a Japanese-style pond garden. Originally spanning over 15,000 square meters, only about one-third of the original estate remains today. Visitors can observe the transition between Meiji-era Western architecture and traditional Japanese domestic design. The site demonstrates the lifestyle of Japan's post-Meiji elite through preserved period furnishings and structural details.

Insider tips

• Bring a pair of socks, as you must remove your shoes to enter the wooden interiors.

• Check the official website before visiting to confirm if the interior of the main house is open for public viewing, as specific rooms sometimes close for maintenance.

• Visit the Billiard House specifically to view its unique log-cabin style architecture, which contrasts sharply with the main mansion.