Stronghold in Královice, Fortified house in Královice, Czech Republic

The Stronghold in Královice is a Renaissance fortress with a medieval Gothic core in Prague's Královice district. Of the old fortress, a 20-metre-high tower with a 10.5 × 10.5 m ground plan survives in the western part of a farmyard built in the 19th century. The tower's south side bears sgraffiti dated 1562.

The three-storey fortress was probably built in the second half of the 14th century and first mentioned in 1388, when Pešík z Komárova sold it with the farmyard to Jan ze Sušice. In 1562 Mikuláš Skalský z Dubu had the tower facade decorated with sgraffito and added a spiral staircase. Confiscated after the Bohemian Revolt, it served the farmyard from the 1620s and stood unused after 1945 until restoration in 2014–2020.

The name Královice is linked to the fortress's medieval owners, the lords of Královice, one of whom, Václav z Královic, probably resided here in 1431. Since September 2021 the tower and the converted farm buildings have served as a gallery and events venue: exhibitions, weddings, conferences and company meetings are held in the hall, the salon and the royal suite in the tower.

The tower is not normally open to the public; since 2021 the fortress has been rented out for weddings, corporate events and exhibitions. The restaurant Markéta in the converted farm buildings at Ke Tvrzi 19 also provides catering for events held in the tower.

The tower's south side bears the year 1562, when Mikuláš Skalský z Dubu had the facade decorated with sgraffiti and added a spiral staircase. The medieval tower was kept with its perimeter wall during the 2014–2020 renewal, while the former water tank in the yard became a retention pond.