This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

The second oldest continuously operating bar in Louisiana.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Rummage through this sunken ship, but leave your scuba gear at home.

The former hotel where Tesla invented the radio.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

A bit of retro transportation flair preserved in the world's largest department store.

Cryptic messages embedded in the New York City sidewalk.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Wine bottle sculpture with a ship's stateroom inside.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Slyly buy a shake in the Parker Meridien lobby.

One of the last Jazz Age "Wonder Theaters" in New York City.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A celebration of capitalism in Midtown.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.