Freiburg Minster is the cathedral of Freiburg. The last duke of Zähringen started the building around 1200 in Romanesque style and the construction continued in 1230 in Gothic style. The minster was partly built on the foundations of an original church that had been there from the beginning of Freiburg in 1120.
In the Middle Ages, Freiburg lay in the Diocese of Konstanz. In 1827 the Freiburg Minster became the seat of the newly erected Catholic Archdiocese of Freiburg and thus a cathedral. The cathedral has the only Gothic church tower in Germany that was completed in the Middle Ages (1330), and miraculously, has lasted until the present, surviving the bombing raids of November 1944, which destroyed all of the houses on the west and north side of the market. The tower was subject to severe vibration at the time, and its survival of these vibrations is attributed to its lead anchors, which connect the sections of the spire. The windows had been taken out of the spire at the time by church staff led by Monsignor Max Fauler, and so these also suffered no damage.
There are two important altars inside the cathedral: the high altar of Hans Baldung, and another altar of Hans Holbein the Younger in a side chapel. The nave windows were donated by the guilds, and the symbols of the guilds are featured on them. The deep red color in some of the windows is not the result of a dye, but instead the result of a suspension of solid gold nanoparticles.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.