Letohrádek Hvězda, Renaissance castle in Liboc, Czech Republic

Letohrádek Hvězda is a Renaissance summer palace in the Hvězda game reserve in Prague-Liboc, built 1555–56 on a six-pointed star plan (a hexagram). It has four levels standing for the four elements, a pyramidal roof topped by a baroque lantern, and a ground floor whose ceiling is divided into 334 stucco fields with scenes from classical myth.

Archduke Ferdinand II of Austria had this summer residence built in 1555, marking a shift away from Gothic architecture in Bohemia. The castle was created during a period when Italian Renaissance styles were transforming the architecture of Central Europe.

The name Hvězda, "Star", comes from the six-pointed ground plan, and the same shape gave the game reserve its name. In the basement a model shows the Battle of White Mountain, fought nearby in 1620; upstairs, seasonal exhibitions and concerts are held. A memorial stone recalls André Breton's 1934 visit.

The villa stands in the Hvězda game reserve in Liboc, Prague 6, about 7 km west of the city centre. The ground floor holds a permanent exhibition on Ferdinand of Tyrol and the building's architecture, the basement a model of the Battle of White Mountain, and the upper floors seasonal exhibitions. Concerts and social events are also held here.

The six-pointed star plan encodes a hexagram, symbolising the union of two opposing forces in harmony, and the four levels stand for earth, water, air and fire. Originally the height equalled the side of a triangle in the plan; a gilded star crowned the steep pyramid roof until Swedish troops looted the villa in 1648.