Herrestad Church is one of the oldest existing churches in Sweden. According the Radiocarbon dating of wooden parts the construction was started in 1112. Archaeologists have also found nearby an early Christian tomb from the 1000s. It is quite probable there has been a wooden church before the stone church was built.
Herrestad church was made of limestone in early Romanesque style. The interior includes a medieval triptych, which depicts the coronation of the Virgin Mary and which was made at Vadstena Monastery in the 15th century. There is also an original medieval font, along with a triumphal crucifix from the 15th century. The pulpit was carved in the 16th century piece by a local artist. The church doors date back to the earliest days of the building.References:
Ängsö Castle was first named as "Engsev" in a royal charter by king Canute I of Sweden (r. 1167-1196), in which he stated that he had inherited the property after his father Eric IX of Sweden. Until 1272, it was owned by the Riseberga Abbey, and then taken over by Gregers Birgersson.
From 1475 until 1710, it was owned by the Sparre family. The current castle was built as a fortress by riksråd Bengt Fadersson Sparre in the 1480s. In 1522, Ängsö Castle was taken after a siege by king Gustav Vasa, since its owner, Fadersson's son Knut Bengtsson, sided with Christian II of Denmark. However, in 1538 it was given by the king to Bengtsson's daughter Hillevi Knutsdotter, who was married to Arvid Trolle.
In 1710, the castle was taken over by Carl Piper and Christina Piper. Ängsö Castle was owned by the Piper family from 1710 until 1971, and is now owned by the Westmanna foundation. The castle building itself was made into a museum in 1959 and was made a listed building in 1965. It is currently opened to visitors during the summers.
The castle is a cubical building in four stores made by stone and bricks. The lower parts is preserved from the middle ages. It was redecorated and expanded in the 1630s. The 4th storey as well as the roof is from the expansion of Carl Hårleman from 1740-41. It gained its current appearance in the 1740s.