745px-Kolomenskoe2012TAE Gulyay-gorod

Two Gulyay-gorod.

Gulyay-gorod, also guliai-gorod, gulay-gorod (Russian: гуляй-город, Гуляй-городок, literally: "wandering town"), was a mobile fortification used by the Russian army in the 16th and 17th centuries.

A gulyay-gorod was made of wooden walls with holes for guns installed on wheels or sleds. The gulyay-gorod was designed as a fortification in steppes, whose flat, void landscape provided no natural shelter.

Gulyay-gorod in 1632Edit

In August of 1634, General Artemi Izmailov used gulyay-gorod to besiege Janusz Radziwiłł and his troops in Rzhev, and to allow his forces to move in on the town.