Rostov earthen Fortress
This fortress has entered the world culture as a monument to the Old Dutch fortification system.
The fortress was built in 1632-1634 by Jan Cornelius van Rodenburg, a "city earthworker". A Dutch engineer ("a Dutch tenant of the city of Amsterdam, a city foreman") built it by order of Tsar Mikhail Fedorovich. This was the first job of a Dutch engineer in Russia. The Rostov earthen fortress is unique in its rare preservation: almost all the ramparts, bastions and curtains have survived to this day, some of the moats are still filled with water.
The main attraction of the Yaroslavl region is a constellation of 12 ancient cities: Yaroslavl, Gavrilov-Yam, Danilov, Lyubim, Myshkin, Pereslavl-Zalessky, Poshekhonye, Rostov the Great, Rybinsk, Tutaev, Uglich and the flooded Mologa. Each of them has its own unique appearance and atmosphere.