and angles. Several buildings on the property served specific functions: the Glass House served for entertaining, the study was used for work and the galleries for storing and displaying the art collection. Johnson called other buildings his "follies" because their size, their shape or both made them unusable, such as the low-ceilinged Pavilion on the Pond or the Ghost House, a structure built with chain-link fencing on the foundation of an old barn and with lilies planted inside, inspired by his friend architect Frank Gehry. Three other existing vernacular houses on the estate (Popestead, Grainger, and Calluna Farms) were remodeled by Johnson. The red and black "Da Monsta", built without right angles and from modified gunite, is one of the few structures visible from the road. Near it is a -high entrance gate, fashioned out of a sailboat boom. In the 1997 documentary, Philip Johnson: Diary of an Eccentric Architect, Johnson discusses the buildings he built on the property (his "diary") with a focus on "Da Monsta", at that time the latest structure. Philip Johnson was a friend and supporter of both Frank Gehry and Peter Eisenman – the influence of both seems evident in the form of Da Monsta. However, Johnson claimed that his original inspiration for Da Monsta came from the design for a museum in Dresden by artist and friend Frank Stella. In fact, when Johnson first made a model of this structure, he named it “Dresden Zwei,” or “Dresden Two,” and presented it to Stella. The name was chosen after a conversation with architecture critic Herbert Muschamp, as Johnson felt the house had the quality of a living thing. The Painting Gallery building is built underground with an entrance modeled on Agamemnon's Tomb. Large-scale 20th-century paintings by Frank Stella, Robert Rauschenberg, Julian Schnabel, Andy Warhol, and Cindy Sherman and more are displayed on a system of three revolving racks of carpeted panels. Johnson and Whitney acquired a large collection over 40 years, but much was donated to the Museum of Modern Art during their lifetime. The gallery still includes an 8-foot tall portrait of Johnson by Andy Warhol, which repeats the same pensive image of the architect nine times in a grid format. Whitney, an art curator and friend of Warhol, Johns, and Rauschenberg, took the lead in shaping the art collection. History In Johnson's lifetime (1906–2005) Johnson spent three years designing the structure, which was