A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

What appears to be an act of fruit vandalism is actually a cultural statement.

These expertly crafted, scientifically accurate glass sea creatures were once an international phenomenon.

The second largest maple syrup producer in the U.S. runs a high-tech operation.

A single handprint, which, according to Ohio State University legend, cannot be scrubbed off.

An art deco ice cream shop covered in vintage train station tiles.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The humble fort that saved Washington.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

A tribute to one of the most famous cowboys on TV, and the consumerism that fueled his popularity.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

A staggering collection of photographs depicting medical, social, and historical change.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

This abandoned prison castle has become an imposing gallery of graffiti art.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

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

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

From scholastic to sepulchral - now under reconstruction.

Walk over a 150 year old manhole.

A floating museum that was sunk by a flood and left to rot in the tides.

“Invented in Key West, Perfected in Brooklyn."

Whether you're up or down, the Elevator Museum is worth a stop.

Skewer up Kangaroo.