In 1834, the estate was mortgaged by Imre Perényi to Count György Károlyi, who in 1825 was one of the founding members of the Hungarian Academy of Sciences by offering 40,000 forints at the reform parliament.

By 1888, the castle was owned by Gyula Károlyi, the organizer and first president of the Hungarian Red Cross Society.

József Károlyi, the Lord Governor of Fejér County and Székesfehérvár, and a member of parliament, is responsible for the eclectic, baroque transformation of the façade of the building facing the courtyard around 1910, which changed the overall effect of the façade with the curved elliptical extension planned in the middle of the U shape.

In order to supplement and "maintain" the cultural functions, the castle aims to integrate into tourism flows with the help of hotel and catering departments.

[6] The castle is open to visitors all year round, and permanent and temporary exhibitions can be viewed and participated in.

[7] Before his death, Ferenc Fejtő, a writer living in France, donated his library of several thousand volumes, including his own works, to the Károlyi Castle in Fehérvárcsurgó.

[7] The castle houses the book legacy of Szabolcs Vajay, a renowned historian and researcher of genealogy and heraldry.

In addition to basic documents on Hungarian and European family history, archival materials (correspondence, notes, manuscripts, etc.)