Located in the eastern part of the Alsace region of France, Colmar is the capital of the Upper Rhine (one of the two provinces of the Alsace region), which is the second largest population in the Alsace region after Strasbourg and Mulhouse. The third largest city. The town of Colmar is a vast pedestrian area made up of many irregularly shaped squares, with the road between the squares interspersed with the church of St. Martin (La Collegiate Saint-Martin)