Berestyn

Berestyn stands on the Berestova River, about 101 kilometres south of Kharkiv. Its urban origin was the Bilevska fortress, built between 1731 and 1733 as part of the Ukrainian defensive line running from the Dnieper to the Donets. The name recalled the occupation force from Belyov used in construction, so the first settlement was tied directly to the mobilisation of military labour across the frontier. The location joined grassland, river access and a chain of fortifications meant to control movement across the steppe.

In 1784 the fortress received the name Kostiantynohrad in honour of Grand Duke Konstantin Pavlovich, and it became a city in 1797. Those acts transferred a military site into the civil administrative geography of the Russian Empire. Horses and open ground fitted the broader Zaporizhzhia setting, where travel and defense depended on mobility as much as on walls.

The river, the former defensive line and the southern approach to Kharkiv remain useful guides to the identity of a town that preserves a history of frontier engineering and regional government.