Bjärka-Säby Castle (Bjärka-Säby slott i Östergötland) is a baroque style château located south of Linköping, in Östergötland County, Sweden. Bjärka-Säby Castle was built for Swedish diplomat and nobleman, Germund Louis Cederhielm. The building was based upon plans from a prominent Swedish landscape architect, Fredrik Magnus Piper. Construction started in 1791 and was completed just before 1800. The surrounding landscape was design in the manner of a traditional English park. The palace was subject to renovation in 1894-1898 based upon plans of architect Agi Lindegren (1858-1927). His work differ from Piper's design and resulted in a Baroque appearance.