The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."

This plaque tells the story of an event that took place in an imagined parallel universe.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

A fantastic reconstruction of a 10th-century Viking longhouse.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

These enlarged egg sculptures represent the native birds of eastern Iceland.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

This elegant arc of a waterfall marks a religious turning point.

The most powerful waterfall in all of Europe.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This modern monument to pagan belief looks like it was transported straight from ancient times.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Rising from the sea like a stone monster.

Staves, storm-calling, and of course, necropants.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Inside this shop, visitors are treated to a unique blend of natural history and art.

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

Medicinal spa created with the discharge from a geothermal energy plant.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

Climb right into the heart of this colorful Iceland volcano.

A winding, blood-red tunnel of hardened lava navigable by foot.