The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

This unconventional used book store was once in the news for the surprising act of burning books.

A natural formation that resembles a camel resting in the New Mexico desert.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

A magnificent church designed by world-renowned architect, Frank Lloyd Wright.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A charmingly eccentric magma chaser presents his complete history of the island's eruptions since 1947, in cinematic form, just for you.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This black church sits alone among a field of lava rock.

A replica of the decorated wooden pillars Viking sailors threw overboard when finding new places to establish a settlement.

The final resting place of the controversial chess champion.

Three columns of volcanic rock shoot out of the ocean.

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This stunning concert hall has become a symbol of Iceland's national recovery.

European castle ruins in an American state park are actually the product of death and grief.

This is not your typical jungle gym.