Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A granite plane marks the site where a French aviator completed the first airplane flight across the English channel.

During the heyday of fishing in Hastings, there were more than 100 of these storage facilities.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

A Cold War command center is hidden under an idyllic countryside.

This old, abandoned hotel offers magnificent views.

The first declared National Monument in the United States.

An architect's childhood fantasy treehouse made real.

A tree bears footwear on the loneliest road in America.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

Come for the speed, leave in love with the desert.

A miniature village mimics the surrounding buildings so well it includes itself.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

For 150 years one family has been producing the iconic hot sauce on a bayou island made of salt.

Official museum, hall of fame, and repository of the Texas Rangers.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

An emerald-green grotto just a short trip from Austin.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.