Elevated freight railway turned wildly successful urban park.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Spiral labyrinth hidden in the hills above Oakland, CA.

A miniature city, once ruled by the Queen of the Netherlands.

A historic house left in "dramatic still life."

A hundred copies of Antony Gormley's naked body stare out across the water.

Large Hadron Collider and the Birthplace of World Wide Web.

Treehouse motel and treehouse-building school.

The world's oldest model village.

Curios, scientific antiques, oddities for sale.

A hotel and restaurant serving as the mecca of kitsch.

Occult books, tarot, oddities.

David Sedaris called it "The greatest shop in the world."

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

A 90-acre park on former landfill that hosts an annual kite festival.

The remains of the great moral philosopher reside in a university in London.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A small but immensely extravagant palace built by the "Night King."

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

A terrific purveyor of natural history objects and curios.

6000-year-old site covered in more than 50 megaliths.