Liahavichy
Liachavičy Castle was a prominent fortified structure located in the town of Liachavičy, Belarus, situated on a hill along the bank of the Vedz'ma River. While the site may have originated as a hill fort during the eleventh or twelfth century, the substantial castle complex was constructed at the end of the sixteenth century by Hetman Yan Eromin of the Hadkevich family. The original design featured a central two-storey palace surrounded by a protective moat regulated by a dam. Following its initial construction, the fortress underwent significant reconstruction and fortification under Eromin's son, Yan Korol, who served as a hetman of the Great Lithuanian Principality, enhancing its defensive capabilities for future conflicts.
The castle holds considerable historical significance for its resilience during the turbulent seventeenth century. Under the ownership of the Sapieha family, the fortifications were strengthened to such a degree that it became the only castle in the region to withstand the devastating Cossack Khmelnytsky massacres. Most notably, during the Russo-Polish War between 1654 and 1667, Liachavičy endured a famous siege in 1660. It distinguished itself as the sole fortress within the entire Grand Duchy of Lithuania that was never captured by Russian forces, marking a unique achievement in the military history of the area.
Despite its earlier successes, the castle ultimately met a destructive fate during the Great Northern War in the early eighteenth century. After the Radziwiłł family arranged for the requisition of the castle's cannons to defend the nearby town of Słuck, the site was left vulnerable. In 1706, the Swedish army invaded and burned the castle and an adjacent Catholic church to the ground, leading to the destruction of both the fortress and the surrounding settlement. Today, the structure exists only as a former castle, though its legacy endures as a central element in the modern coat of arms of Liachavičy.