Themed Tour
Themed TourStep inside Pontoise's grand town hall for one weekend only during the Journées du Patrimoine. The ornate Salle du Conseil Municipal opens its doors, letting you wander a ceremonial chamber where local decisions have echoed for generations.
Heritage Days open house
Historic civic architecture
Guided building tour
Ceremonial chamber
Tips
📅check Journées du Patrimoine schedule for times
🏛️guided visits of the council chamber
📸bring your camera for the ornate interiors
Saturday, September 19
Journées du Patrimoine 2026
September 19 at 12am
+1Le Pecq
Themed TourThemed TourStep inside Pontoise's grand town hall for one weekend only during the Journées du Patrimoine. The ornate Salle du Conseil Municipal opens its doors, letting you wander a ceremonial chamber where local decisions have echoed for generations.
Heritage Days open house
Historic civic architecture
Guided building tour
Ceremonial chamber
Tips
📅check Journées du Patrimoine schedule for times
🏛️guided visits of the council chamber
📸bring your camera for the ornate interiors
Saturday, September 19
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