An 18-meter-long sarcophagus of a constantly growing dead prophet.

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

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

An impressive collection is dedicated to the legendary beast.

This spectacular track has run continuously since 1882.

Ethiopian standing stones featuring remarkably preserved carvings of swords and people.

Massive stele returned to Ethiopia after 70 years in Rome.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

Gargantuan home of Russian science.

One of the world's tallest statues is also one of its most hated.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Former headquarters of the KGB.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

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

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

10,000 flowered plants bloom in the City of Roses.

The World's First 24 Hour Coin-Operated Art Gallery!! Plastic, Styrofoam, and Elvis--If you can't get rid of it, you might as well worship it!!

The seamy, underground secrets of Portland's criminal past.

A taste of Middle Earth, in the middle of the Bayou City.

Turning night into day in Victorian-era Austin to thwart a serial killer.

A high-octane shrine to the greatest Texans who ever lived.