Numerical symbolism abound at East Asia's oldest observatory.

This human-made pond is part of a Korean palace complex first built in the 7th century.

The embalmed remains of the communist leader lie within a custom crystal coffin.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

The last surviving submarine from a strange chapter of Finnish history.

This church also serves as a lighthouse complete with a beacon.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

A medieval setting reimagined into a unique art alley.

The Guardian of Tallinn.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

On the Pakistan-India border the militaries perform an elaborate theater of aggression each and every night.

A 17th-century mosque that was used for war more than worship.

These stairs were built to accommodate royals mounted on elephants.

Space-age minarets towering over Islamabad.

This bazaar is one of the oldest in the Arabian world.

This spectacular mosque houses the second-largest chandelier in the world.

This beautifully restored fortification kept the city safe for centuries.

Traditional architecture and ancient irrigation systems are on display in this gorgeous mountain village.

If you dare visit this fort, fire-breathing hyenas might devour your camels.

Qatar's oldest market can trace its origins back more than a century.

Skyscraper powered by wind turbines attached between its towers.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.