Jenčov Castle, Gothic castle ruin in Běleč, Czech Republic.

Jenčov Castle is a Gothic castle ruin situated on a rocky outcrop within the Vůznice National Nature Reserve. The site consists of a rectangular palace and a prismatic tower that together formed a defensive structure.

Jenčov is one of the smallest royal castles in the Kingdom of Bohemia, probably founded by Ottokar II of Bohemia as a hunting castle. Research confirmed its existence at the turn of the 13th and 14th centuries. Because it stood far from the nearest villages, its ruin was never dismantled for building material and has been preserved.

The structure embodies medieval Bohemian defensive architecture and serves as a protected cultural monument of the Czech Republic. Its compact design reflects the practical needs of the time when it was built.

The ruins are located roughly 25 kilometers west of Prague and are reasonably accessible from the city. A wooden information box and visitor notebook at the site's base provide context about the place and allow guests to share their thoughts.

With dimensions of roughly 17 by 9 meters, this fortress ranks among the smallest royal castles built in medieval Bohemia. Its diminutive size offers insight into how defensive fortifications could serve their purpose within minimal footprints.