Úštěk Castle, Medieval castle in Úštěk-Vnitřní Město, Czech Republic.

Úštěk Castle stands in the southwestern corner of the town square at 240 metres above sea level, formed by houses No. 3 and 86, protected as cultural monuments since 1964. Its roughly rectangular plan follows the old town plots, with a moat on three sides and a three-room palace with cellars cut into the rock. The massive square Pikart Tower was built into the outer wall after 1428.

The Berka of Dubá family had the castle built in the older town, probably at the start of the 15th century. In 1428 Zikmund of Vartenberk seized and burned Úštěk, then had the castle restored. In 1779 the town's brewing burghers acquired the buildings and converted them into a malt house.

The castle reflects the importance of Úštěk as a regional center during the Middle Ages and remains a focal point of the town's identity today. Its position overlooking the town shows how medieval power was both practical and symbolic in shaping settlement patterns.

The site is accessible via Route I/15 leading to Úštěk, where signs point toward the historic town center. Daytime visits work best to appreciate the stone details and the views across the town from the elevated position.

The castle forms part of a broader medieval defense system that includes the Pikart Tower, built in 1428 at the boundary between the fortress and the old town. This tower demonstrates how different fortifications worked together to protect the settlement.