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.
Open Day  Workshop

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  • Bibliotheek Nieuw Den Helder
    Marsdiepstraat 272, Den Helder
Event  Open Day

Animal in Focus at The Helderse Valley

Discover an animal from De Helderse Vallei up close on March 6 at 3 p.m.
Fri 6 Mar '26
  • De Helderse Vallei
    De Helderse Vallei 9-11, Den Helder
Event  Open Day

Animals to Bed at The Helderse Valley

Watch the animals go to bed on March 7 from 4:00 PM to 4:30 PM.
Sat 7 Mar '26
  • De Helderse Vallei
    De Helderse Vallei 9-11, Den Helder
Event  Open Day

Northern Festival at 's Heeren Loo

Experience the Noorderfestival on June 26th at 's Heeren Loo in Den Helder and enjoy a day full of socializing and fun.
Fri 26 Jun '26
  • ’s Heeren Loo
    Eikenhout 310, Julianadorp
Event  Open Day

Open Monument Days in Den Helder

Discover the Den Helder monuments on September 12 and 13.
  • Den Helder
    Geen data beschikbaar, Den Helder
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