Stadt Gengenbach, Black Forest, Germany
The 24 windows of the 18th century town hall represent the 24 "windows" of an Advent calendar. An Advent calendar is a special calendar used to count the days of Advent in anticipation of Christmas. Since the date of the First Sunday of Advent varies, falling between November 27 and December 3 inclusive, many Advent calendars, especially those that are reusable, often begin on December 1.