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

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

What happens when a sculptor has to find a way around a 100-year-old copyright.

Soaring over the Niagara Whirlpool since 1916.

This expansive bridge in the Canadian wilderness was originally just built for friends.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

Single runway interrupted by a busy road that cuts across its middle.

The remnants of an archaeological camp stand within Tikal National Park.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Huge stone depressions which may have acted as an Incan agricultural experiment.

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 phone booth-sized municipal building has been a piece of police property for more than half a century.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.