18m long sarcophagus of a constantly growing dead prophet.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A modern mechanical planetary system, part of a 10,000 year clock.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Home to items never before seen by the public.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

The remains of diamond fever taken over by the desert.

Tracks of ceratosaurus and Coelophysis rhodesiensis tracks can be found fossilized in the sandstone near Mt. Etjo.

In Namibia there is an installation that explores the intertwined linguistics and existential beliefs of an imaginary community.

A small monument in Lithuania marks the geographic center of Europe—or at least one of the claimants.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.

Welded sphere dropped from space.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.