This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Legendary site where an evil bishop was devoured by rodents.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

Famously misunderstood wonder of the ancient world

A true roadside icon standing on the same plains that the herds once roamed.

Three legendary, living albino buffalo roaming their pastures for all to see.

At the time of its completion, it was the tallest dam in the world.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

An architect's childhood fantasy treehouse made real.

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 medieval woodcut-style artwork chronicles life in medieval London.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

The pockmarks across the building's facade are remnants of the Blitz.

A mysterious shape catches the eye in this 16th-century painting.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.