Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

An ancient Egyptian temple in the middle of Madrid, Spain.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Jule Körner's house full of bizarre architectural details.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

Super-heavy Nazi architectural experiment.

Berlin's old airport.

Metro station with a claim to rock n' roll fame.

Budapest's Communist-era statues, banished to the suburbs.

A monument to the "father of modern warfare" Gustav II Adolf.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Fantastic stories on a miniature railroad.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

A miniature train-ride through Slovenia's largest cave system.

The world's largest model of our planetary system.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A scenic overlook of a pit mine hundreds of meters deep filled with blue water.

A restaurant and observation deck built in a unique broadcasting antenna.

The metal-free wooden towers of Brück.

It's not your typical library, memorial, or book store.