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

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

What happens here stays here – unless it affects the whole world.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

The Last Home of an Executed King.

Constructed from recycled wrought iron railroad tracks, it's been described as the most beautiful seaside pier in England.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

Once a black market electronics marketplace, now an otaku shopper's paradise.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

These temples are among the oldest free-standing stone buildings in the world.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Thousands of well-dressed mummies below a monastery.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The Great Fire of London and the regulation of one-way streets both started in this alley.

The medieval woodcut-style artwork chronicles life in medieval London.