Monasterio de Nuestra Señora de Gracia was originally founded in the old district of “La Villa” in the early 16th century but because of its small size and poor condition, the monastery was moved to the current location named “de la Concepción”. As the statute of our lady of Grace was ancient and was donated by the Catholic Monarchs, the convent’s name was changed to the name we know today. The current Monastery was built with a beautiful Mudejar style cloister in 1555. The Church acquired a Baroque style after it was reformed in the 18th century because of the famous 1884 Lisbon earthquake.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.