Built for the 1962 World Cup, this fully functioning botanical clock is still ticking.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

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

The 17th-century hacienda where Simón Bolívar spent his last days before dying from tuberculosis.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

The only sea in the world that has no land boundary.

These wooden balconies that are both decorative and functional.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

A herd of colorfully painted bovine statues can be found in the middle of "cowtown."

This marvelous array is one of the largest collections of mechanical instruments in Europe.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

High winds can make this one scary landing.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A display of hand-built replicas of the legendary vessels used by Patagonian and Antarctic explorers.

Memorial to the father of the Republic of China.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

A half-size replica of the World Trade Center towers above Tulsa.

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.