Hatoyama Hall (Otowa Palace) 鳩山会館

Hatoyama Hall, also known as Otowa Palace, is a Western-style residence in Tokyo. Ichirō Hatoyama commissioned the building in 1924, and it was where he helped establish the Liberal Democratic Party. The building and its gardens are becoming a museum that honors the Hatoyama family's contributions to Japanese politics and education.

Source: en.wikipedia.org ↗, read 2026-09-10