Sutro Baths/Land's End, San Francisco
Concierge.com's insider take:
The Sutro Baths, once three acres of pools that could hold 25,000, closed in 1952 and are now nothing but crumbling walls and brackish ponds. These melancholy ruins, with the churning Pacific as backdrop, mark one end of the beautiful Coastal Trail around Land's End. Starting from the parking lot above the Baths (uphill from the Cliff House), the trail skirts the wooded promontory to offer stunning views of the Golden Gate Bridge from the seaward side.