Kiunkaku (起雲閣) was built in 1919 by a shipping magnate to serve as his private villa. In 1947 the property became a ryokan where it continued to serve guests until 1999. During this time various rooms and buildings were added, which were designed in a Japanese architectural style with Western and East Asian influenced interior design. One of the more striking of these rooms is the facility's Roman-style tiled baths.
Kiunkaku is now owned by Atami City and has been preserved as a cultural property. Visitors can enter the buildings, see the original designs of some of the guest rooms, and walk around the beautiful landscape garden that lies at the center of the complex. Kiunkaku also has a music hall, an exhibition gallery and a Japanese style room which may be rented out for community events. In addition, there is a cafe where visitors can enjoy tea and sweets with a view of the garden.