Sundials and clocks of old Paris
Before wristwatches, Paris told time from its façades and the sky. At Cité, the Clock Tower holds the city's first public clock, made around 1370 for Charles V by the clockmaker Henri de Vic, with a dial attributed to Germain Pilon. The route then passes Hôtel de Ville, Saint-Paul and Cluny, before reaching rue Saint-Jacques and its sundial signed Salvador Dalí (1960s). At Saint-Sulpice, the church's gnomon (1727-1744) casts a sunbeam onto a brass line and was used to set the date of Easter. The route ends at Invalides, whose façades carry several sundials.