Frechen is a town in the Rhein-Erft District, North Rhine-Westphalia, Germany. Frechen was first mentioned in 877. It is situated at the western Cologne city border. It is the site of the 1257 Battle of Frechen between Conrad von Hochstaden, Archbishop of Cologne and the people of the town. In the 16th century it became known for locally produced terra cotta products, especially the "Bartmannskrug". In the late 18th century lignite was industrially mined.