This steamship has been beautifully rusting off the coast of an Iranian island since the 1960s.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

Iranian tombstones shaped like male and female sexual organs.

This 12,000 year old Iranian cave village has been continuously inhabited for over 3,000 years.

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

Modern-day cave dwellers carve elaborate homes out of volcanic debris.

Hydraulic systems in an ancient underground Iranian city.

A 1,500-year-old, 3-story subterranean city where ancient Persians took refuge in times of war.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

Iran's colorful terraces are a rare geological masterpiece.

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

The largest dam in the world and the site of a potential disaster.

The world's second-tallest flagpole stands proud despite dropping rank.

Looking for a unifying history, Uzbekistan finds its answer in a 14th Century Turco-Mongol conqueror... despite the fact he wasn't Uzbek.

Touching displays of wishes for peace from the Cold War era.

One of the most ethnically diverse spots on the planet.

Final palace complex of the last of 29 Kokand rulers.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

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

18m long sarcophagus of a constantly growing dead prophet.

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

Former island in the Aral Sea used to be a top-secret Russian bio-weapons facility.

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

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.