Largest lake in Great Britain measured by surface area.

A single oak tree rises out of the waters of Loch Lomond.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

The location of this small park was once the site of an infamous public morgue.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

Executions were once held near this beautiful 18th-century fountain.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

Order a boozy baba au rhum at the oldest patisserie in Paris.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

A lush vertical garden blooming in the heart of Paris.

What looks like a normal building is really a hollow facade hiding a subway vent.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

Beside the pew where C.S. Lewis often sat while attending church, a window filled with characters from his beloved stories.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Long before Moo Deng, this 17th-century waterfowl was a cultural sensation.

Hidden in plain sight, this creepy sculpture watches from above.

A lost World War II military camp and post-war suburb swallowed by the woods.

Over 100 years ago this pyramidal holding cell was reserved for rowdy drunks but now only offers five minute sentences.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

These haunting ruins belong to an ancient village that once had one hell of a view.