This striking sculpture of Icarus honors Greece's fallen flyers.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The metal leaves on this tree are engraved with the names of Holocaust victims.

The largest fountain in Bratislava.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

Haunting and beautiful trees, doomed to die.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

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

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.