In 1231 the city of Kowalewo was captured by the Teutonic Knights. They soon built a castle, and in 1275 they granted city rights to this developing settlement. After the complete destruction of the city and the castle by the Tatars in 1286, relocation took place, most probably under the conditions of the Chełmno Law. The castle was rebuilt in 1278. Invasions of the Prussians, Tatars, and Lithuanians hastened the decision to build the defensive walls around the Kowalewo in the 14th century. In 1454 the city was invaded by the armies of the Prussia States who formed a rebellion against the Teutonic Knights.
Finally, in 1466 Kowalewo constituted a section of Poland. Since the 15th century in Kowalewo the Magistate Courts and Sejmik of the Chełmno Land had gathered. The city played a role of the local trade and craft center. During 1629, 1655-1657 the city was occupied and plundered by the Swedes, in 1713 by the Russians. In 1772 only 34 houses of the townspeople existed. The city walls were ruined, as well as the castle and church.References:
Derbent is the southernmost city in Russia, occupying the narrow gateway between the Caspian Sea and the Caucasus Mountains connecting the Eurasian steppes to the north and the Iranian Plateau to the south. Derbent claims to be the oldest city in Russia with historical documentation dating to the 8th century BCE. Due to its strategic location, over the course of history, the city changed ownership many times, particularly among the Persian, Arab, Mongol, Timurid, Shirvan and Iranian kingdoms.
Derbent has archaeological structures over 5,000 years old. As a result of this geographic peculiarity, the city developed between two walls, stretching from the mountains to the sea. These fortifications were continuously employed for a millennium and a half, longer than any other extant fortress in the world.
A traditionally and historically Iranian city, the first intensive settlement in the Derbent area dates from the 8th century BC. The site was intermittently controlled by the Persian monarchs, starting from the 6th century BC. Until the 4th century AD, it was part of Caucasian Albania which was a satrap of the Achaemenid Persian Empire. In the 5th century Derbent functioned as a border fortress and the seat of Sassanid Persians. Because of its strategic position on the northern branch of the Silk Route, the fortress was contested by the Khazars in the course of the Khazar-Arab Wars. In 654, Derbent was captured by the Arabs.
The Sassanid fortress does not exist any more, as the famous Derbent fortress as it stands today was built from the 12th century onward. Derbent became a strong military outpost and harbour of the Sassanid empire. During the 5th and 6th centuries, Derbent also became an important center for spreading the Christian faith in the Caucasus.
The site continued to be of great strategic importance until the 19th century. Today the fortifications consist of two parallel defence walls and Naryn-Kala Citadel. The walls are 3.6km long, stretching from the sea up to the mountains. They were built from stone and had 73 defence towers. 9 out of the 14 original gates remain.
In Naryn-Kala Citadel most of the old buildings, including a palace and a church, are now in ruins. It also holds baths and one of the oldest mosques in the former USSR.
In 2003, UNESCO included the old part of Derbent with traditional buildings in the World Heritage List.