Philadelphia-based architect Samuel Sloan created this building, also known as Nutt's Folly?
Longwood (Natchez, Mississippi) Longwood, also known as Nutt's Folly, is an historic antebellum octagonal mansion located at 140 Lower Woodville Road in Natchez, Mississippi, United States. The mansion is on the U.S. National Register of Historic Places, and is a National Historic Landmark. Longwood is the largest octagonal house in the United States.
Shell Building (San Francisco) The Shell Building is an office tower in the Financial District of San Francisco, California. The 28-story, 115.22 m , building is located at 100 Bush Street, at Battery Street. It was designed by George W. Kelham and built in 1929, in the architectural style of Gothic Moderne, Moderne and Art Deco.