The Kolomna Kremlin is one of the largest and most powerful fortresses of its time, which was built in 1525-1531, in Kolomna, during the reign of Vasily III. The original wall had 17 towers (four – pass) and had a length of 1938 meters. The height of the walls varied from 18 to 21 meters, thickness – from 3 to 4, 5 meters. Currently preserved 7 towers of the Kremlin.

Kolomna tower was the Western watchtower of the city, which was guarded by the Astrakhan highway (Moscow-Ryazan road) – one of the oldest roads in the state. Kolomna is the highest of all surviving towers of the Kremlin. Its height is 31 meters, with a diameter of 13 meters. Tower dvadcatiletney, but if you look at it from afar, it looks round – and this explains its name. On dvadtsatiletnego pillar staggered was located 27 Windows, loopholes, increasing the angle of attack and helped to keep the perimeter defense. Inside the eight-storey towers are spiral staircases, at the top on the outer side of a decorative belt made of white stone, from afar the top of the tower resembles a crown. The people of the tower called "Marinka". There is a legend that in the tower for nearly two years lived a widow both Ljedmitriev Marina Mnishek son's baby.

On the territory of the Kremlin is Cathedral square – the spiritual center of the city. The architectural appearance of the square was formed from the XIV – XIX century. The Central place it occupies assumption Cathedral, built by the decree of Dmitry Donskoy in honor of the victories of Russian arms over the Tatar-Mongol yoke in two fights at the Reins (1378 year) and the Kulikovo field (1380). To the right of the Cathedral belfry (XVII century) – the most powerful bell tower of this type in Russia. Next to the belfry is the Tikhvin Cathedral (XVIII-XIX century) – winter Cathedral Church of Kolomna. To the left of the Cathedral is the Novo-Golutvin Holy Trinity monastery (XVI-XIX century).

Among the oldest buildings of the Kolomna Kremlin – adjacent to the Cathedral square from the East, resurrection Church (XIV – XIX centuries), which in 1366 he was crowned Prince Dmitry Donskoy with the Princess Eudoxia of Suzdal, the Church of St. Nicholas Seating (1501) is one of the first brick churches in Russia.

Part of monuments Kolomna Kremlin is along the street, Lazhechnikov, one of the most picturesque corners of the fortress: Brusensky assumption monastery (XVI – XIX centuries), the former building of the City Council (the nineteenth century), the town a noble mansion of the XIX century.