Logo of City Marketing Den Helder with City by the Sea addition
Logo of City Marketing Den Helder with City by the Sea addition

Open Day

Whether you are looking for cultural festivals, music performances, sporting events, lectures or local markets, there is always something to do in Den Helder! Check out our events calendar to stay up to date on what is happening.
Event  Open Day

Animal in Focus at The Helderse Valley

Discover an animal up close during Dier in Beeld.
Fri 5 Jun '26
  • De Helderse Vallei
    De Helderse Vallei 9-11, Den Helder
Event  Open Day

BookStart Day in School 7

Discover together with your child how fun reading aloud is during BoekStart Day.
Sat 6 Jun '26
  • Bibliotheek Den Helder, School 7
    Keizersgracht 94, Den Helder
Event  Open Day

Visit MS Gamle Oksøy in Den Helder

Step aboard MS Gamle Oksøy on June 16 and discover a special lighthouse ship in Den Helder.
Tue 16 Jun '26
  • Museumhaven Willemsoord
    Willemsoord 73, Den Helder
Event  Open Day

Wandering through Green Yards

Discover farm life during the "Zwerfen over Groene Erven" (Wandering through Green Farms) event on June 27 and 28 in Julianadorp.
Next date:
Sat 27 Jun '26
Sat 27 Jun 2026
10:00
-5:00 PM

 

  • Diverse groene erven
    Geen data beschikbaar, Den Helder
Event  Open Day

Visit FS Elbe 1 in the Museum Harbour

Visit FS Elbe 1 on July 7, 8, and 9 and admire two lightships together in the Museum Harbour.
Next date:
Tue 7 Jul '26
Tue 7 Jul 2026

 

  • Museumhaven Willemsoord
    Willemsoord 73, Den Helder
Event  Open Day

Communicatiebunker Postkantoor Open Monumentendagen

Ontdek de Communicatiebunker Postkantoor tijdens Open Monumentendag.
Next date:
Sat 12 Sep '26
Sat 12 Sep 2026
10:00
-5:00 PM

 

  • Communicatiebunker Postkantoor
    Boerhaavestraat 15, Den Helder
Event  Open Day

Open Monument Days in Den Helder

Discover the Den Helder monuments on September 12 and 13.
Next date:
Sat 12 Sep '26
Sat 12 Sep 2026
10:00
-5:00 PM

 

  • Den Helder
    Geen data beschikbaar, Den Helder
Event  Open Day

Hospitaalbunker Sani 638 Open Monumentendagen

Ontdek de Hospitaalbunker Sani 638 tijdens Open Monumentendagen.
Next date:
Sat 12 Sep '26
Sat 12 Sep 2026
10:00
-5:00 PM

 

  • Sani hospitaalbunker 638
    Timorlaan 39, Den Helder
View the full events calendar

Stay informed

Already 5,000 readers receive weekly updates.
Tips, events and new places.
Subscribe to our newsletter.