National Automobile Museum (The Harrah Collection)

Casino owner William Harrah built a collection of about 1,450 cars, then the largest in the world. After his death in 1978, most of it was auctioned off, but a nonprofit saved part of it, and the museum opened in November 1989. More than 200 vehicles are shown in era-themed galleries, including Elvis Presley's 1973 Cadillac Eldorado and the Phantom Corsair.