Iwasaki Koyata Memorial Hall

The spacious Iwasaki Koyata Memorial Hall with views of the garden can accommodate conferences, lectures, concerts, wedding receptions and other large functions.

Location East Wing B1F Size (sq.m) 195 m²



[Notice] A new brighter projector (12,000 lumens) has been installed at the ceiling. It can be rotated in accordance with the layout of the venue.

Floor Layout


Capacity and Rates for conference (as of Oct. 1, 2019)

Capacity For conferences
(classroom style)
For conferences
(theater style)
For conferences
(hollow square)
Rates For conference
(2 hours)
Regular Price: 181,500 yen
Special Price*: 145,200 yen
For conferences
(half day)
Regular Price: 302,500 yen
Special Price*: 242,000 yen
For conferences
(full day)
Regular Price: 605,000 yen
Special Price*: 484,000 yen

Capacity and Rates for banquets (as of Oct. 1, 2019)

Capacity For banquets
(circle table style)
For banquets
(buffet style)
Rates For banquets
(2 hours)
Regular Price: 77,000 yen
Special Price*: 57,750 yen
For banquets
(for 1 additional hour)
Regular Price: 38,500 yen
Special Price*: 28,875 yen

Capacity and Rates for exhibitions (as of Oct. 1, 2019)

Rates For exhibitions Regular Price: 726,000 yen
Special Price*: 580,800 yen
For exhibitions
(off-peak season: Jan, Feb, Aug)
Regular Price: 544,500 yen
Special Price*: 435,600 yen

The above-mentioned prices include consumption tax (as of Oct. 1, 2019) and are subject to a 10% service charge.
*Special price is applicable for IHJ members and those whose use of facilities meets the criteria of the public interest purposes of the I-House. Please contact the I-House for further information.

Floor Plan

Click the image to view as PDF. Plan-View

Reservations and Inquiries

Banquet Reservations
International House of Japan
TEL: 03-3470-4616 (10:00-18:00, Closed on Sundays & Holidays)
FAX: 03-3470-3210