National Heritage Day 2026

See below for a list of all participating locations and the current opening hours for Open Monument Day 2026. 

Open to the public 

Greenfield Mill12 Groenveldsedijk, GroenveldSunday, September 13 11:00 a.m. to 4:00 p.m.
Veenhuizer MillVeenhuizerkade 3, HeerhugowaardSaturday, September 1211:00 a.m. to 4:00 p.m.
Defense pumping station 35 Colonel Sneepweg, Egmond aan den HoefSunday, September 13 11:00 a.m. to 4:00 p.m.
Berkmeermolen18 Berkmeerdijk, ObdamSunday, September 1311:00 a.m. to 4:00 p.m.
Katwouder MillRear closure 2, KatwoudeSunday, September 1311:00 a.m. to 3:00 p.m.
GrebmolenMill Road 1, WarmenhuizenSaturday, September 12, and Sunday, September 1311:00 a.m. to 4:00 p.m.
Mill LQ2 Molenweg, Burgerbrug Saturday, September 12 11:00 a.m. to 4:00 p.m.
Groetermolen12 Hargerweg, SchoorlSunday, September 1311:00 a.m. to 4:00 p.m.
WindmillHoeverpad 13, AlkmaarSaturday, September 12 11:00 a.m. to 4:00 p.m.
Menningweermolen2 Menningweerdijk, GrootschermerSaturday, September 12 11:00 a.m. to 4:00 p.m.
De Viaan Windmill16 Havinghastraat, AlkmaarSaturday, September 12 11:00 a.m. to 4:00 p.m.
De Dog Windmill22 Geesterweg, UitgeestSaturday, September 1211:00 a.m. to 4:00 p.m.
Beetskoog pumping stationBeetskoogkade 2, OudendijkSunday, September 13 11:00 a.m. to 4:00 p.m.
Pumping station 't Leven 145 Lagedijk, Zaandijk Saturday, September 1211:00 a.m. to 4:00 p.m.
North Polder House 11 Molendijk, Schermerhorn Sunday, September 13 11:00 a.m. to 4:00 p.m.
Lely pumping station22 Zuiderdijkweg, WieringerwerfSaturday, September 12Sign up for a guided tour
National Tide Gauge1 Havenweg, EnkhuizenSaturday, September 1211:00 a.m. to 4:00 p.m.
Dutch Steam Engine MuseumOosterdijk 4, MedemblikSaturday, September 12, and Sunday, September 13 10:00 a.m. to 5:00 p.m.

Not open to the public, but the mill yard is accessible 

North Mill  Hoogegeest 47, Akersloot                                Saturday, September 12, and Sunday, September 13 11:00 a.m. to 4:00 p.m.