The Romanesque Bojnice Castle (Bojnický zámok in Slovak), blending in further Gothic and Renaissance elements, is a medieval castle that was first recorded in 1113 AD and lies above the namesake town on Nitra River in the Trenčín Region, northwestern Slovakia.

Originally, it was a wooden fort that was gradually reinforced with stone whilst the outer walls were adjusted to the rocky surrounding terrain and its first owner was Hungarian nobleman Matthew III Csák, granted the castle by King Wenceslaus III of Bohemia, in the early 14th century.

A century on, Hungarian King Matthias Corvinus was now lord of the castle which came to the noble family of Zápolya following his death (1490) and then the Thurzós a few decades later (1528), under whom it underwent a major revamp into a Renaissance castle.

They latter were succeeded by the Pálffys in the mid 17th century down the line of whom János Ferenc Pálffy undertook a complex romantic refurbishing of the structure between 1888 and 1910 into its modern fashion.