3,000 market stands in five former Zeppelin hangars.

Flamboyant architecture from the turn of 20th century.

Steadily reminding Czechia of its past.

Looming communist pillar with a Czech twist.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

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

The palace of the King of Kings, burned by Alexander the Great.

Marked by the hand of the explorer Henry Morton Stanley.

17th century mosque for Shah Abbas' harem.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

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

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

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

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

One of the most ethnically diverse spots on the planet.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

Lonely minaret stump of a destroyed city.