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:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.