Jõelähtme church is one of the oldest churches in Harjumaa County. The building of Gothic-styled church was started in 1220s and completed in the beginning of 14th century. Jõelähtme church was consecrated to Virgin Mary.
The church has been rebuilt several times. The last rebuilding in 1910 was carried out after a conflagration: the gable end tower was replaced by a massive tower erected in front of the portal. Although the church has been subject to damage at various times, it still has the Late Renaissance pulpit and the Baroque altar (completed in 1670).
The grave of Gustav Heinrich Schüdlöffel (1798-1859), pastor who ministered the congregation for a long time and is known for his literary achievments, can still be seen in the cemetery. In March 2000 the altar crucifix, two candlesticks, four chandeliers, two girandoles and the contribution box were stolen from Jõelähtme church. In April 2001 the thieves returned the stolen objects.
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.