The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

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

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

Commemorating the spot where the famous scientist fed his pigeons.

There must be a pun in this haystack somewhere...

The 28-foot granite map plots the locations of 40 theaters in New York City.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

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

A different kind of swan princess.

A mega theme park-wax museum mélange containing all things biblical.

The world's largest private aircraft collection.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

A historic landmark and museum filled with curious objects representing the history of Key West.