Basel (pron.: /ˈbɑːzəl/) or Basle (pron.: /ˈbɑːl/; German: Basel; pronounced [ˈbaːzəl]) is Switzerland's third most populous city with about 166,000 inhabitants. Located where the Swiss, French and German borders meet, Basel also has suburbs in France and Germany. In 2011, the Basel agglomeration was the third largest in Switzerland with a population of 500,600 in 74 municipalities in Switzerland and an additional 53 in neighboring countries (municipal count as of 2000). The tri-national metropolitan area has around 830,000 inhabitants in 226 municipalities.
The Basel Minster (German: Basler Münster) is one of the main landmarks and tourist attractions of the Swiss city of Basel. It adds definition to the cityscape with its red sandstone architecture and coloured roof tiles, its two slim towers and the cross-shaped intersection of the main roof. The Münster is listed as a heritage site of national significance in Switzerland.
Originally a Catholic cathedral and today a reformed Protestant church, it was built between 1019 and 1500 in Romanesque and Gothic styles. The late Romanesque building was destroyed by the 1356 Basel earthquake and rebuilt by Johannes Gmünd, who was at the same time employed for building the Freiburg Münster. This building was extended from 1421 by Ulrich von Ensingen, architect of the cathedral towers at Ulm and Strasbourg. The southern tower was completed in 1500 by Hans von Nußdorf.