St. James's Parish Church was built in the Baroque style between 1613 and 1615 on the site of an older Gothic style church, erected in the early 15th century by the Augustinian Order. In 1598, the old church was acquired by the Jesuits and thus became the first Jesuit church in the Slovene Lands and one of the first in the Inner Austria. The interior was designed by the Italian architect Francesco Robba, who designed the main altar, and the Slovene stonemason Luka Mislej, who designed the entrance portal and the stone side altars. After the Ljubljana earthquake of 1895, the church was renovated by the Linz-based architect Raimund Jeblinger and the interiors were redesigned by Janez Šubic. Nevertheless, much of the original Baroque style has remained intact.
On the side of the church there is a column erected in 1682 to commemorate the Habsburg victory against the Ottoman Turks in the Battle of Saint Gotthard. The column, dedicated to the Virgin Mary, was designed by the Salzburg-based artist Wolf Weisskirchner upon the plan by Johann Weikhard von Valvasor.
In the late 1920s, the square in front of the church was renovated by the Slovene architect Jože Plečnik, and in the early 1950s by the architect Boris Kobe. Opposite St. James's Church is the Gruber Palace, which houses the Slovenian National Archives.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.