Valangin castle was a residence of the local lords from mid-12th century to 1566. The oldest visible remains date from the 13th century. It consists of a courtyard surrounded by a rampart and a 'donjon' (keep), which hosts the current museum.
Since 1430 the castle was altered with semicircular towers to be defended against the firearms. The castle was damaged by fire in 1747 which destroyed a whole wing. The dungeon was restored and partly rebuilt between 1769 and 1772. Today Valangin castle is a museum.
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.