This (almost) century-old, French-style château was built to the tune of $11 million — more than $100 million by today's standards. It sits on 443 acres on the highest point on Long Island, and during its 1920s heyday, it was a mecca for royalty, heads of state and Hollywood stars. After decades of varied uses and abandonment, it was painstakingly restored, with its original elements being renovated or authentically reconstructed. Today, there are 32 individually decorated guest rooms, as well as a grand ballroom, library and formal gardens (originally designed by the Olmsted brothers) with eight reflecting pools. Days begin with complimentary breakfast in the dining room, after which guests can explore Long Island wine country, unwind with an in-room massage or enjoy exclusive golf and tennis privileges at the Cold Spring Country Club.