The birthplace of the Herndon Gas Company.

This pun was simply waiting to come to life, and one defense contractor made it so.

America's oldest drive-in movie theater has been in continuous operation since 1934.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

Walk in the footsteps of the gods and straddle two tectonic plates.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

Building owners can take out tiles for free at this repository for historic building materials.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

Five candy-colored villages on the Italian Riviera.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Behold the rickety glory of one of the oldest roller coasters still standing.

This dramatic rail curve was once the target of a failed Nazi attack.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Fortified medieval tower house with lovely roof garden.