Kykuit, Historic house museum in Pocantico Hills, Mount Pleasant, United States

Kykuit is a 40-room mansion set on a hilltop in Pocantico Hills, near Sleepy Hollow in New York State. The property includes geometric gardens with fountains, terraces, and modern sculpture collections distributed across several levels.

The estate was completed in 1913 and served as home to four generations of the Rockefeller family, beginning with John D. Rockefeller, founder of Standard Oil. Later residents expanded the interiors and added art collections that now form part of the public tours.

Nelson Rockefeller transformed sections of the mansion into an art gallery, displaying works from Picasso, Warhol, and other 20th-century artists.

Tours depart from the Philipsburg Manor Visitor Center by shuttle bus, and there are three different options that require advance booking. Access is available for visitors aged ten and older, with tours lasting several hours.

Nelson Rockefeller turned the empty basement passages that led to a grotto into a private gallery hung with Picassos, Chagalls and a Warhol; both Chagall and Warhol visited the estate. The tunnels below the house thus hold 20th-century art rather than stores.