The national romantic cathedral was designed by Lars Sonck and built between 1902 and 1907. In the beginning of the 20th century Russification was a governmental policy of the Russian Empire aimed at limiting the special status of the Grand Duchy of Finland and possibly the termination of its autonomy. This caused the rise of the national romanticism in Finland and Tampere Cathedral was one of the most remarkable examples of the new national spirit.
The cathedral is famous for its frescoes, painted by renowned symbolist Hugo Simberg. The paintings aroused considerable critique in their time, featuring versions of Simberg's The Wounded Angel and The Garden of Death. Of particular controversy was Simberg's painting of a winged serpent on a red background in the highest point of the ceiling, which his contemporaries interpreted as a symbol of sin and corruption.
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.