Basel, Switzerland: Marktplatz

The Marketplace is the center of activity in downtown Basel. The Town Hall, with its red color and tower, more or less dominates the area. Still, the other buildings - like this one next door - are nice too.

More to the point, the area in front of these buildings is often filled with fresh food in an open-air market. You can buy vegetables, fruits and flowers there on a given day. 

The area is a major crossing point for mass transportation, and it's right in the middle of a variety of stops for tourists. It makes for an obvious meeting point too.