The St.Caherine's Church of Muhu is considered one of the most remarkable early-Gothic buildings in Estonia. It was first mentioned in Hermann von Wartberge's Chronicle dated 1276. The exterior architecture of the Muhu Church is a strict monumental style and its originality is prominent. The Muhu Church has preserved its original shape. Around 1663, a little wooden steeple was added to the church, but perished together with the roof in 1941. In 1993, during the restoration period an additional roof was constructed on the facade of the church to protect the church bell.
As for the interior furnishings of the Muhu Church one will find an altar table made of dolomite, which has been preserved from the time of its original construction. Also the stone base of the baptismal basin originates from the Middle Ages.
The pulpit is in Renaissance style and was completed on 1627. It is one of the oldest in Saaremaa and was made by Balthasar Raschky. The Classicist altar was created by Nommen Lorentzen in 1827. The altar painting has survived from the original altar and the painting was finished in 1788.
In the Muhu Church and churchyard there are worth noting the trapezium-shaped tombstones with pagan symbols found only on the islands and Western Estonia. They have been traced to the 12th and 13th centuries. The most intricate tombstone is presently located in the frame of the door leading to the wall staircase. It is one of the two preserved in Estonia from the 12th-13-th centuries depicting human figures. Through discovering tombstones, bones and some other rare archaelogical finds, the church is thought to have been erected on a sacred site of the ancient Muhu inhabitants.
Reference: Estonian Evangelical Lutheran Church
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.