Károlyi Mansion, Carei, Museum and château in Carei, Romania.

The Károlyi Mansion is a neo-Gothic and neo-Baroque castle in Carei, rebuilt in 1892–1894 to plans by Miklós Ybl and supervised by Arthur Meinig. Seven towers of different shapes rise above a moat, and the former square courtyard became an atrium covered with a tulip-patterned wooden ceiling. Its staircase rests on two red marble columns, and two Italian marble fireplaces carry lions from the family coat of arms.

A stone house built in 1482 by Láncz László Károlyi with King Matthias's permission became a fortress with bastions and a moat against the Turks. In 1794 József Károlyi demolished it and had Joseph Bitthauser design a Baroque palace. István Károlyi rebuilt it in 1892–1894 to plans by Miklós Ybl, executed by Arthur Meinig, adding towers and a moat.

The mansion houses the Carei Municipal Museum, whose collections cover the Károlyi family and the history of the Satu Mare region. The 2018 film The Princess Switch shot its palace scenes in the building and its grounds. The park holds a riding hall built between 1760 and 1780, used as a cinema under communism and now home to a riding club.

The mansion is located in central Carei and offers guided tours through its exhibition rooms for visitors to explore. Check opening hours beforehand as these may vary by season.

During the communist period, the building served as a museum, cultural center, and municipal library all at once. This multi-purpose role shaped community life for many decades.