This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

Also known as “Robin Hood’s tree,” it became a famed location along Hadrian's Wall before it was cut down.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

Eat first, shop later at this eatery within an Asian grocer.

This Neolithic passage tomb forms part of a World Heritage Site.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

Where Agatha Christie mysteriously disappeared in 1926.

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

Unusual British home built to disguise a water tower.

Forlorn amidst a thicket mere feet from a cliff's edge stands a solitary headstone that appears completely out of place, a haunting symbol of a once-thriving town now lost to the relentless forces of nature.

A village on the east coast of England that has almost completely eroded into the North Sea.

The largest offshore wind farm in the world would be even bigger if it weren't for some pesky birds.

A hunched figure depicted on the signs honors a local gentleman who died on an Antarctic expedition.

A 550-square-meter micro-nation off the coast of Britain.

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."

Makers and sellers of the original and finest York Ghosts.

The patron saint of spinsters grasps a container of dried blood.

A glimpse into the last days of a once-booming past fishing industry.

There’s a hidden military meme engraved on the World War II Memorial.

This mine was once used to defend the coast from attack during World War II.

A restored World War II Churchill Mark VII Tank now stands guard in Carrickfergus.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A subterranean playground in an abandoned slate mine.