Tarakaniv fortress

Tarakaniv Fort, also known as Dubno fort is a 19th-century fortress located next to Tarakaniv village in the Dubno district of Rivne Oblast, Ukraine. It was commissioned and built by Alexander II of the Russian Empire and can be found next to Lviv-Kyiv Highway M06 on the right bank of the Ikva river.: 170  The fortress could accommodate up to 800 people.

Source: Wikipedia