Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

The most gigantic, swoony, intimidating trio of fingers in all of antiquity.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

An ancient capital city that dates back 3,000 years and harbors many surprises.

Robot jockeys ride their humped mounts to victory as part of a 21st-century twist on an ancient desert sport.

Skyscraper powered by wind turbines attached between its towers.

A striking symbol of the Bulgarian capital.

The oldest housing complex in Riga is a mini timeline of architectural trends.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

An impressive monument to Poland's independence.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

The secret city built by the Manhattan Project.

Railroad came. People came. Railroad left. Town died.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

A historic dam made famous for its turbines and feature in a Hollywood classic.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

The scant remains of this flooded historic village can be explored in one of the most remote areas of the Great Smokies.