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

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

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

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

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

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

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

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A cemetery housing wild west legends in South Dakota.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Miraculous tree that seems to sprout out of solid rock.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One man's ambition created this psychedelic log home.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

Washington's iconic carousel has a nice piece of Civil Rights history.

Perhaps the most scandalous statue of America's first president.