According to Wikipedia:
“A Christmas market, also known as Christkindlmarkt (literally: Baby Jesus Market), Christkindlesmarkt, Christkindlmarket, Christkindlimarkt, and Weihnachtsmarkt, is a street market associated with the celebration of Christmas during the four weeks of Advent. These markets originated in Germany, but are now being held in many other countries. The history of Christmas markets goes back to the Late Middle Ages in the German-speaking part of Europe, and in many parts of the former Holy Roman Empire that includes many eastern regions of France. The Christmas markets of Bautzen were first held in 1384. Dresden‘s Striezelmarkt was first held in 1434. Frankfurt was first mentioned in 1393, Munich in 1310, and Augsburg in 1498. In Austria, Vienna’s “December market” can be considered a forerunner of Christmas markets and dates back to 1298.