A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

Submerged lava formations create incredible waterworks.

A true treehouse near Hawai'i Volcanoes National Park.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The Hveragerði fissure runs through this unassuming shopping center.

An abandoned logging settlement nestled in the woods near a popular ski town.

The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The oldest stone house in Paris was built by its most famous alchemist.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A crumbling cliffside ruin hidden in the woods.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.