This collection of Neolithic monuments make up one of The U.K.'s richest archeological landscapes.

No other place in Scotland has such a high concentration of prehistoric carved stone surfaces.

One of the largest, grandest imperial mausoleums was built as the founder of the Ming Dynasty's final resting place.

Only a few pieces remain of a grand 16th-century water clock that once announced the changing hours with the sound of bells, gongs, and drums.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This historic national park is covered in the stunning ruins of red rock pueblos.

The oldest continuously occupied public building in the United States.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

It's believed a castle existed at this site since the 12th century.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Time stands still at this serene burial ground in the center of Budapest.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A Baroque mansion with ties to legendary magicians and alchemists.

This bank is widely believed to be the inspiration for the offices of Philip Marlowe, the hardboiled detective featured in a number of Raymond Chandler's stories.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.