A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

A sweet symbol marks the place where torturous executions were once carried out.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

A memorial for public executions that dates back to the 14th century.

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.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The show's fictional Korean medical camp was created in the Santa Monica hills.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A Cold War site complete with rusty structures, hiking trails, and beautiful views.

A small research station sits at the summit of this mountain, which is one of the few U.S. peaks higher than 14,000 feet outside of the Sierra Nevada.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

A monumental cross hides in the trees in Golden Gate Park.

An artsy hidden staircase leads to breathtaking views of San Francisco.