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

World Bee Day at De Helderse Vallei

Discover how special and indispensable bees are on World Bee Day.
Wed 20 May '26
  • De Helderse Vallei
    De Helderse Vallei 9-11, 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

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

Kroontjesbunker Open Monument Days

Discover the Kroontjesbunker in the dunes of Huisduinen during the Open Monument Days.
Next date:
Sat 12 Sep '26
Sat 12 Sep 2026
10:00
-5:00 PM

 

  • Kroontjesbunker (FL250)
    Duinweg, Den Helder
Event  Open Day

Helderse Odd Fellows Open Heritage Days

Discover the Helderse Odd Fellows during the Open Monument Days.
Sat 12 Sep '26
  • Helderse Odd Fellows
    Texelstroomlaan 4, Den Helder
Event  Open Day

Career Event Op Kop 2027

Discover on March 3 and 4, 2027, what Beroepenevent Op Kop can offer you and your organization.
Next date:
Wed 3 Mar '27
Wed 3 Mar 2027

 

  • Kreuk Bloembollenkwekerij
    Langevliet 10, Callantsoog
View the full events calendar

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