One of the major architectural landmarks of the city is the Derbent Wall, stretching over 3500 meters. This is a double wall still exist since the Sassanids, originates from the fortress Naryn-Kala, and ends in the waters of the Caspian Sea.

Derbent wall more than 15 centuries was used for defensive purposes during the invasion of the Arabs, Mongols and Persians. What she had to endure confrontations, historians still do not know exactly. The north and south walls are parallel to each other at a distance of 300-400 m. The mountain part of the Derbent Wall goes up to 40 km in the direction of the Caucasus Mountains. Today only fragments of the once grand structure. The offshore part of the wall goes to 500 meters into the sea, thereby blocking the entrance to the harbor. The southern wall - later it was demolished in the XIX century. The northern wall is largely retains its original appearance.

The lower part of the Derbent walls built of mud bricks, even though the walls of the main buildings, dating back to VI century., Was built of large blocks of hewn stone. Partition between rows of stone blocks was zabutovany ragged stone. For the construction masons used lime mortar. The small size of blocks indicate a later building period. When laying builders alternated blocks "cap" and "face", it makes masonry durable. The average height of the wall is about 12 meters, and a thickness of 220 to 380 cm.

Along the wall along its entire length substantially equal distance from each other were installed tower 73. They are all built of dark mud brick. Unfortunately, until today, only 46 survived the towers.

Gates Sassanid era have interesting architectural solution. Of the 14 pristine gate survived only 9 - three in the north, four - in the south wall, two - in the fortress. In the Middle Ages, the so-called stone gate was rebuilt, the gates Magpie - in the XVII century., And Glashatayskie and the middle gate - after Dagestan became part of the Russian Empire.

Derbent Wall - a monument to the ancient Persian architecture, included in UNESCO World Heritage Site.