This event is in the past.It took place on September 22, 2025 at Château d’Eau.
Themed TourThemed TourStep inside a 1908 Hennebique water tower, a concrete cathedral of industrial engineering that once supplied Les Lilas from the Marne. Heritage Days opens this architectural time capsule for a rare glimpse at Paris's hidden infrastructure.
1908 architecture
Hennebique concrete
Heritage Days
rare access
Tips
🏗️Hennebique was a pioneer in reinforced concrete
🆓no reservation needed, just show up
Journées du Patrimoine 2025 - Château d'Eau des Lilas
Faubourg Saint-Martin
Themed TourThemed TourStep inside a 1908 Hennebique water tower, a concrete cathedral of industrial engineering that once supplied Les Lilas from the Marne. Heritage Days opens this architectural time capsule for a rare glimpse at Paris's hidden infrastructure.
1908 architecture
Hennebique concrete
Heritage Days
rare access
Tips
🏗️Hennebique was a pioneer in reinforced concrete
🆓no reservation needed, just show up
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