Tiny communists hammer away on the Olomouc Astronomical Clock.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

Religious structure known for its sculpted details.

Traditional 11th-century outdoor tannery.

One of the most spectacular canyons in the world.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Home to three historic ships from the age of Vikings.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Source for a sizable portion of Egypt's freshwater supply is more than an optical illusion.

An alien landscape of chalk-rock in the Egyptian desert.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Ruins of the Crusaders' headquarters.

Mysterious lost empire of the Silk Road.

Charnel house at the foot of Mount Sinai.

An ancient capital city that dates back 3,000 years and harbors many surprises.

A battle between nature and architecture in the Cambodian jungle.

Khmer Rouge's high security prison.

5,000 skulls in memorial to those killed by the Khmer Rouge.

The lavish temple of the Cao Dai religion that includes Buddha, Mohammed, Joan of Arc, and Victor Hugo.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

Once thought to be the Garden of Eden it holds a holy footprint claimed to belong to Adam, Buddha and Shiva.