A cemetery dedicated to the mountaineers who perished climbing Mount Aconcagua.

A brightly colored natural bridge formed by mineral-rich hot springs high up in the Andes.

This park feels like a lush little jungle full of wildlife nestled within São Paulo.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Most-visited and most-photographed slot canyon in the American Southwest.

The unbelievably opulent home built for an infamous newspaperman.

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

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

Though it's not the largest, this one-kilometer outdoor market is reportedly the longest in Europe.

An architectural oddity hides in plain sight on this iconic London bridge.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Hear the quietest sound from across the dome.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Sweden's "good old days" painstakingly re-created in a model village.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

An extraordinary mechanical calculator designed by the mathematician and philosopher Gottfried Leibniz.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.