Climb right into the heart of this colorful Iceland volcano.

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

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

An encyclopedic collection of mammal penises.

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

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

Rising from the sea like a stone monster.

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

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

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

A museum of natural history, Edwin Carter's original log cabin home and workshop houses taxidermy specimens.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

This 19th century jail was mainly used to incarcerate the drunk and disorderly.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

There are eight natural springs around town, each with a slightly different taste.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

This iconic science fiction house still looks like something from the future.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.