From Wikipedia: http://en.wikipedia.org/wiki/Basel_Minster

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.