A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A posh members-only club with a literally dramatic history.

The notorious headquarters of a corrupt political machine.

The most confusing clock in New York.

This abandoned subway station can still be seen on regular commuter trips.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

New York City's only wildlife rehabilitation center treats more than 3,000 feathered and furry patients each year.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

Boise State's stadium was the first non-green football field in the world.

The magic's in the hole!

Former bath house turns gastropub.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

A display of magnificent stained glass windows is the first exhibit of its kind.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

A collection of 1,300 accordions of all shapes and sizes displayed in chronological order.

When waves crash onto this section of beach, the rocks sing a song.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Statue dedicated to the star of an old television show.

A winged-helmed, sword-brandishing tribute to German Americans.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A historic presidential getaway on the continental United States' southernmost island.