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In page North by Northwest:

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  • Vandamm's house, set on a cliff atop Mount Rushmore, was not a real structure. Hitchcock asked the set designers to make the house in the style of Frank Lloyd Wright, the most popular architect in America at the time, using the materials, form and interiors associated with him.[14] Set designer Robert F. Boyle planned the house, which featured a cantilevered living room and made extensive use of limestone. Exterior shots were done using matte paintings,[15] while interior shots were filmed using a set built in Culver City, California, where MGM's studios were located.[16]