Bjärsjöholm or Bjersjöholm Castle is a Renaissance castle from the 16th century. Originally consisting of four brick buildings built around a courtyard, the present castle consists of two buildings, with a newer addition close by.
According the excavations there has been a manor already in the Middle Ages. The site is first mentioned in 1344. Since the 14th century it has been owned by families Munk, Rotfeld, Kaas, Ugerup and Thott. In 1668 Bjärsjöholm was acquired by Ebba Brahe, wife of Jacob de la Gardie. After de la Gardies it has belonged for example to the war marshal Otto Wilhelm Königsmarck.
The newer addition on the estate, the Bergsjöholm Castle, was built in Romantic, German style in 1849-50, on a hill just south of the old castle. It is a three-story building flanked by two square towers. In 1890, one of the Renaissance buildings needed extensive renovations and only the gables could be saved.