The oldest standing building in Las Vegas was established by Mormon settlers.

The "dragon babies" of southeastern Europe.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

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

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

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

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

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

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

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

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

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

A sulfuric martian landscape that looks far better than it smells.

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

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

This famous Nevada gold mine, once a hotbed of Wild West shenanigans, is now open for tours.

Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.