The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Take a drunken tour inside the world's largest known geode.

A castle built by an eccentric medieval enthusiast in suburban Ohio.

An abandoned relic of the city's failed experiment with below ground transit.

The largest earthwork effigy in the world.

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

These lush botanical gardens employ the most purrfect pest control force.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

A stunning Catholic cathedral built by a curve-loving communist in Brazil’s newly created capital.

The largest geyser field in the southern hemisphere is a spectacular sight.

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The slate extracted from these Pennsylvania quarries was once hailed as the finest in the world.

Each step is a mere four inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

The site of America's first commercial oil well essentially disappeared after the town went bust.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.