The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

A mocking tribute to the past and modern leadership of Prague.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

A British plaque explains that a house was built using the spoils of the first international golf bet.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Recently restored menagerie of Victorian-era beasts.

A preserved college lock-up that recalls a clubhouse approach to discipline.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The beams of the New College, Oxford dining hall come with an amazing story.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

A miniature village mimics the surrounding buildings so well it includes itself.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The quiet field that inspired one of the most famous songs of all time.

The sign at the garden gate reads: “These Plants Can Kill.”

These fantastically named natural pools look like something out of a Scottish myth.

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.