Think the Upper East Side is dull playground for the rich? Well, okay, but the 'hood also has a rich history as the home to the sprawling Park Avenue Armory, the luxe Frick Mansion and other opulent structures. It was also the stomping ground for artist Alexander Calder, architect Stanford White and magician Harry Houdini. Meet at the southwest corner of Lexington Ave and 68th St (bigonion.com). Subway: 6 to 68th St–Hunter College.
Upper East Side: A Clash of Titans walking tour