The Treaty of Roskilde was negotiated at Høje Taastrup Church and signed (NS) during the Second Northern War between Frederick III of Denmark–Norway and Karl X Gustav of Sweden in the Danish city of Roskilde. After a devastating defeat, Denmark–Norway was forced to give up a third of its territory to save the rest, the ceded lands comprising Blekinge, Bornholm, Bohuslän (Båhuslen), Scania (Skåne) and Trøndelag, as well as her claims to Halland.
The peace banquet (Fredstaffelet) at Frederiksborg Castle, following the signing of the Treaty of Roskilde in 1658