The Festetics Palace is a Baroque palace located in the town of Keszthely, Zala county, Hungary. Its construction, started by Kristóf Festetics in 1745, lasted more than a century, during which the palace, built at first on the foundations of a ruined castle, was tripled in size, in two subsequent building campaigns, most recently in the 1880s, to designs by Viktor Rumpelmayer, living in Vienna. When Rumpelmayer died in 1885, the work was carried to completion by architects Gusztáv Haas and Miksa Paschkisch. The result is one of the three largest country houses in Hungary.
The counts Festetics were progressive landowners: Kristóf Festetics founded a hospital, Pál Festetics established a school in the town, and in 1797, Count György Festetics opened an agricultural college, the Georgikon, the first of its kind in Europe, which is still in operation as a faculty of the University of Pannonia.
The library wing was built by György Festetics in 1799—1801, with guidance from András Fischer of the Vienna Academy. Execution was entrusted to local artisans. The dining room has stucco decor by Mátyás Vathner from the town of Pápa.