A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

Home to more than 13,000 pieces of war memorabilia and military equipment.

A chilling monument to Korean patriots who resisted the Japanese occupation.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

One of Ireland's most infamous prisons for rebels including men, women and children.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

A man throwing a giant severed hand towers over Antwerp’s main square.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

Most prolific publishing house in the 1600s open to the public.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

A little sculpture with a large wardrobe.

An ancient Egyptian temple in the middle of Madrid, Spain.

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.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The final resting place of the great navigator, or maybe his brother.