Seikantei was built in 1906 (Meiji 39) in Odawara Town, Ashigarashimo District, Kanagawa Prefecture (currently Minami Town, Odawara City) as the villa of Marquis Nagashige Kuroda, who was active in the Meiji era. It is located on the south-facing slope of the former Odawara Castle Sannomaru outer earthworks, and on a clear day you can overlook Sagami Bay and Mt. Hakone overlooking Manazuru Peninsula and Oshima from the main building. The building has a sukiya-style structure that is not formal, and is a series of one-story houses and upstairs houses. Inside the building, you can also see excellent designs such as panel paintings and Ajiro-gumi ceilings. In 2005, Seikantei became a nationally registered tangible cultural property. In addition, it is currently open to the public since 2010 as a facility in Odawara City. There is also a cafe where you can enjoy coffee and matcha while looking out at the garden and Sagami Bay. Events such as special exhibitions and concerts that match the four seasons are also held irregularly.