Salnecke is one of the best preserved 17th century castles in Uppland. The first known owner of Salnecke was a judge Karl Ingeborgasson Lejonbalk. He sold the farm to the Skokloster nunnery in 1302. Later it belonged to Bo Jonsson Grip and the monastery of St. Clare in Stockholm. The monastery was the owner until 1460, when Salnecke fell to archbishop Jons Bengtsson (Oxenstierna).
After Reformation Salnecke became a crown property. Gustav II Adolphus gave the farm to the council Filip Sadler in 1626. After his death in 1641 Salnecke was given to Grissbach. The castle belonged to his family until 1730's. Salnecke was acquired by Klas Samuel Jonas Gyllenadler in the 1830s and it is still in his family's possession.
References:The church of the former Franciscan monastery was built probably between 1515 and 1520. It is located in the UNESCO World Heritage Site of Old Rauma. The church stands by the small stream of Raumanjoki (Rauma river).
The exact age of the Church of the Holy Cross is unknown, but it was built to serve as the monastery church of the Rauma Franciscan Friary. The monastery had been established in the early 15th century and a wooden church was built on this location around the year 1420.
The Church of the Holy Cross served the monastery until 1538, when it was abandoned for a hundred years as the Franciscan friary was disbanded in the Swedish Reformation. The church was re-established as a Lutheran church in 1640, when the nearby Church of the Holy Trinity was destroyed by fire.
The choir of the two-aisle grey granite church features medieval murals and frescoes. The white steeple of the church was built in 1816 and has served as a landmark for seafarers.