This restaurant proudly displays bread signed by the 39th president.

This NASA test station is home to some of the world’s largest and most powerful space environment simulation facilities.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The site of Paul Revere's historic two lantern warning.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A former major munitions plant that has been converted into a sprawling art space.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

All that remains of a gigantic earth-moving machine.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Unique collection containing a wide and curious range of contraceptive items.

A dazzling display of lights and crystals.

Medical history museum featuring a lovely doctor's office from the 1800s.

A "Titanic" superfan changed his name to Jack and set up this strange shrine to the blockbuster, complete with Korean food and Tarot readings.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Charles Babbage's proto-computer, painstakingly brought to life.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Scattered throughout London are ancient remnants of the city's former bounding wall.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.