A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

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.

A sweet symbol marks the place where torturous executions were once carried out.

A pair of mosaics marks the spot where the last accused witch of Dundee was put to death.

Every St. Andrews student knows to avoid this inscription for fear of a martyr's curse.

A Turkish ghost town abandoned in a population exchange with Greece.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

The world's first ice hotel is still one of the most elaborate and beautiful.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

Stalactites and stalagmites in a beautifully lit cave.

Medieval torture techniques with a modern conscience.

When you're a great Russian Tsar, even your vomit gets a statue.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

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

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

An ancient necropolis of magnificent tombs.

This no man's land slicing through the island is strewn with abandoned relics of another time.