The fairy tale castle of the "fairy-tale king."

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Famously misunderstood wonder of the ancient world

A wall of chewing gum moonlights as collective art.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A two thousand year old brothel uncovered in Northern Greece.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

This field of half-buried stone crosses was the burial place of a sect of heretical gnostics.

This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.

The hallucinogenic center of the ancient world.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Ancient Greek oracle of the dead.

A spectacular cave and a beguiling lake.

Monasteries on rock pillars, once accessible only by frayed ropes.

The ghost town where the villagers refuse to leave.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

London's amazing modernist public square that never was.

This mouldering abandoned mental hospital was once a center for progressive healing.

The sign at the garden gate reads: "These Plants Can Kill."

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.