Sultan-Kala, Merv

In the 11th-12th centuries Merv became the capital of Great Seljuk state and reached the highest prosperity. By the order of Seljuk sultan Melik-shakh the city was surrounded by a fortification and moat.

This fortress with the area of over 400 hectares is known as Sultan-Kala - the Fortress of Sultans. In the northeastern part of Sultan-Kala Shakhriar-ark citadel with palace complexes of sultans, administration buildings and a military barracks - was constructed.