This collection of grinning ephemera has grown from basement to Brooklyn.

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

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

Townhouse facade doubles as an RMS Titanic Memorial.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

New York's oldest and possibly grandest keeper of books.

A secret climbing tree hides along the side of a Costa Rican road.

This WWII plane died a quiet death, and is now a garden eel playground.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The site of a popular piano lounge owned by a former world champion boxer is now a place to rent a truck.

A stealthy Apache hideaway that became the haunting site of a mass grave.

This historic national park is covered in the stunning ruins of red rock pueblos.

Inside this store, a mysterious statue draws visitors from the world over.

Most-visited and most-photographed slot canyon in the American Southwest.

The cinder cone volcano with a less than complimentary name.

A Wild West jailhouse that slid down the mountainside.

Ancient pueblos built into the base of a natural canyon wall.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This memorial includes fragments from one of the greatest tragedies in United States history.