Designed in 1917 by the Vevey architect Charles Gunthert, the Hôtel de Ville of Le Locle was inaugurated in 1918. It is a Gesamtkunstwerk, combining harmoniously the different styles of neo-renaissance, Heimatstil and Art Nouveau. The fresco above the main entrance is by Swiss painter Ernest Biéler.
Contrary to the slightly earlier vaulted ceiling of the Stadthaus Zürich, which used Falconnier glass bricks, the ceiling of the Hôtel de Ville du Locle used translucent reinforced concret developed by the German company Luxfer Prismen.