St Ursula is one the Patron Saints of Cologne, Germany (along with the three magi and St Gereon). She and 10 virgins were martyred in the city by Huns who were besieging the city in the year 383. The Church, named in her honor, is located where the massacre occurred.
A Church has been on this location since the 4th century. The current church was constructed in the 12th Century in the Romanesque tradition. Gothic elements were added in the 13th and 14th century.