Žeimiai Manor is a monument of late Classicist architecture in the small town of Žeimiai, Jonava district. Next to the manor are the Žeimiai chapel, a surviving park laid out in the 18th century with about 20 plant species and a lime avenue (the Žeimiai limes), the manor granary, an ice house, farmhands' quarters and a stable. In 1387 Jogaila granted Žeimiai Manor to Skirgaila. Later the manor passed to the Zawisza family, and in the 17th century to the Medeksza family. D. Medeksza built the brick manor house. In 1780 the manor passed to the Kossakowski family. In 1890 an inventory of Žeimiai Manor was drawn up and repairs were carried out. In the Soviet period the manor was nationalised. After the Second World War flats and a library were set up here. For some time during the Soviet period an agricultural technical school operated at Žeimiai Manor, and later a pupils' hostel was set up. The manor homestead is privately owned and home to the "Aikas Žado laboratorija", which invites visitors to cultural events, art exhibitions and installations.