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 3 Apr '26
  • De Helderse Vallei
    De Helderse Vallei 9-11, Den Helder
Event  Open Day

Vroeg uit de veren in De Helderse Vallei

Help de dierverzorgers mee en beleef De Helderse Vallei voordat het open gaat.
Fri 24 Apr '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

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.
Sat 27 Jun '26
  • Diverse groene erven
    Geen data beschikbaar, Den Helder
Event  Open Day

Open Monument Days in Den Helder

Discover the Den Helder monuments on September 12 and 13.
Sat 12 Sep '26
  • Den Helder
    Geen data beschikbaar, Den Helder
View the full events calendar

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