Places Mark0 Wants to Go

This network of narrow, medieval passages has the most delightful name.

This Scottish manor house is a lush relic from the life of a literary great.

An artist's whimsical transformation of everyday objects.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

The Liverpool street made famous by the Beatles is real.

Neon artworks light up this dark Edinburgh tunnel.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

The colorful stairs are made with marble from the world's major quarries.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

The oldest residential street in Europe also features an optical illusion.

Puzzles within puzzles hide a golden treasure in this hedge maze.

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

The granddaddy of English geoglyphs dates back to the late Bronze Age.

A faded reminder of what was once a common sight in London during the Blitz.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

Human-made caves excavated to hide a secret society of wealthy pagans.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.