After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

A Wild West jailhouse that slid down the mountainside.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

This church on a Tohono O'Odham reservation has stood since 1797.

Carved initials which are nearly 500 years old preserve the deposed Queen's presence at Hampton Court Palace.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

The bones of two medieval royal lions were discovered at the historic fortress.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Hear the quietest sound from across the dome.

Eighty million natural history specimens call this gargantuan museum home.