There are many markets in Karlsruhe. You'll find local vegetables, fruits, honey , cheese and meat. But also exotic fruits are sold here. I always love to walk across a market, even though I don't buy much.
meanwhile a symbol of the street it started as a interim solution to give the grave of Margrave Karl Wilhelm a new "roof", because the formally one, the concordia chruch has been torn down due to lack of space. So first a wood construction has been constructed and about 100 years later the now existing stone construction has been finalized.
This place is at least once a week what it says, a market place, as you can see on the photo. Besides it is one of the main central places of the city, with the old town hall and the protestant town church next to it (constructed by Weinbrenner). Besides the tram passes this place, the most important directions cross on this place.
Karlsruhe is known for it's little pyramide in the center of town. A famous architect loved the Egyptian type of architecture and put a pyramide and oblisque in the middle of Karlsruhe. (Sorry, I wish I had a better picture)
The Markplatz is the19th century centre of the town. It has an interesting pryamid monument flanked by the Town Hall (designed by Weinbrenner) and Stadtkirche.