A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

The most powerful waterfall in all of Europe.

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

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

Climb right into the heart of this colorful Iceland volcano.

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

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

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

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

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Rising from the sea like a stone monster.

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

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Bell tower juts out from a village buried under a lake.

Where beer lovers can literally immerse themselves in beer.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The sign at the garden gate reads: "These Plants Can Kill."

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

The homestead of American patriot John Adams.

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.