Mariaffi Castle in Sângeorgiu de Mureș, Historic mansion in Sângeorgiu de Mureș, Romania

Mariaffi Castle is a two-storey late Renaissance building on a small rise beside the road, rebuilt around 1870 by mason Pál Soós of Târgu Mureș for Albert Máriaffi. Both facades measure 28 metres; a long avenue through the former park leads to the arcaded main entrance and the pillared pergola terrace. The Mureș side has arcades and Bohemian vaults below, a covered porch with flat ceiling above, and brick pillars with Corinthianising capitals.

A Renaissance manor house built by István Petki in 1640 stood on this site; by 1860 Orbán Balázs described it as a large fortified castle, partly in ruins. In the 1870s Albert Máriaffi had it rebuilt as an eclectic castle, with works carried out by Târgu Mureș master mason Pál Soós (1843–1910). After nationalisation in 1948 it passed to the state agricultural enterprise, and after 1989 it stood abandoned.

The castle bears the name of the Máriaffy family, who received the estate through marriage after the death of Count József Petki in 1817. The double coat of arms of Albert Máriaffy (1823–1889) and his second wife, Countess Lujza Bethlen (1835–1900), is set in the neo-Renaissance attic above the balcony. The local council plans to install a Romanian ethnographic museum, a Hungarian museum and a Romanes museum in the ground-floor rooms.

The castle is located in a village setting in central Romania and can be reached by local roads. The municipality is actively working on restoration, so visitors should check current access conditions before planning a visit.

Under Lajos Máriaffi III (1868–1915) and his son Lajos IV (1894–1971) the castle had a 68-hectare park with rare tree species and a small pond. Only a fragment survives, managed by the Academy of Agricultural Sciences; apartment blocks, a cattle research station and a gendarmerie unit were built on the rest, and the pond has turned into marsh.