A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

A fantastical bed and breakfast with magically unique rooms.

This bike path was sunk below water level for maximum wonder.

Walk or bike along a narrow strip of Belgium sandwiched by German territory.

Rediscovered in 1992, this abandoned medieval village once flourished by fishing and piracy.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

Historic medieval fortified city in southwest France.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A beautiful maze marks where three countries meet.

The magical, mossy forest that inspired Princess Mononoke.

Ruins of a German Castle on top of a towering stone pillar.

360° views of the city plus five floors of optical illusions and hands-on science.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Rising from the sea like a stone monster.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Famously misunderstood wonder of the ancient world

An ancient capital city that dates back 3,000 years old and harbors many surprises.