The Marktplatz is the beating heart of Esslingen's old town, a well-proportioned square surrounded by half-timbered houses and historic public buildings. The Altes Rathaus, built between 1430 and 1586, is the dominant structure: its Renaissance facade is adorned with decorative gables, gilded ornamentation, and an astronomical clock that displays the time, date, and lunar phases.
The square is also a working market space: a farmers' market takes place here on Tuesday and Friday mornings. At Christmas it hosts the famous Mittelalter- und Weihnachtsmarkt, the medieval market that runs alongside the usual Christmas stalls and draws crowds from across the Stuttgart region. The juxtaposition of the two Gothic churches — the Protestant Stadtkirche and the Catholic Frauenkirche — gives the square an unusual architectural symmetry.