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

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

Visit the monolithic tomb of America's most famous general.

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

This semi-hidden Manhattan restaurant is based out of a loading dock.

A crumbling hospital from the 1850s on Roosevelt Island.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

On Japan's Tashirojima Island, cats are king.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

Commemorating the spot where the famous scientist fed his pigeons.

One of only two commuter aerial tramways in the United States.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

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

Wine bottle sculpture with a ship's stateroom inside.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

Rare collection of medieval books under lock and key.

Gothic tower mentioned in Thomas Hardy poem "The Channel Firing."

Museum about life, death, and cannibalism in the Stone Age.

Traveling collection of amazing automata.

Hear the quietest sound from across the dome.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.