It owes its name to merchants who sold salt here until the end of the 19th century and is today the site of a flower market. In the fifteenth century, when the Czechs were ruling, the Inquisitor came to the city, the papal envoy of the Franciscan Jan Kapistran. His appeals for piety and sermons against heretics turned primarily against the Jews. Jews from Wroclaw who had refused to receive baptism were burnt at this site, and this is a memorial to them. .