This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

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

Amazingly, this centuries-old wooden monastery is still standing today.

This magnificent white pagoda was constructed to resemble a sacred Buddhist mountain.

An eerie abandoned gentlemen's club built for British officials during the colonial era.

Myanmar's Mount Olympus atop a 2,500-foot volcanic plug.

The oldest teak bridge in the world is made from the remains of a royal palace.

Gigantic unfinished stupa and the world's 2nd largest bell.

This gem-encrusted temple is said to contain some of the Buddha's hair which can make the deaf hear and the blind see.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.

This unique temple complex remains off the typical tourist trail.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

One of the biggest markets in Asia, under one of the continent's largest domes.

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

One of the holiest Shi'i shrines in Iran honors the life and death of a learned noblewoman who became a saint.

This remote mountain shrine is one of the most sacred Zoroastrian temples remaining in the world.

The largest covered bazaar in the world.

Colorful mineral deposits turn these mountains into an Impressionist fantasy.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

Long before air conditioning, Persian architects found an ingenious way to cool off.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.