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Atlantic Wall center Huisduinen

Discover the hidden stories of Den Helder during Open Monument Day 2026

On Saturday 12 and Sunday 13 September 2026, Den Helder opens its monumental doors once again. During the national Open Monument Day, you will have the opportunity to visit buildings that you normally cannot simply enter. This year's theme is Resilient Heritage: In times of uncertainty. A wonderful opportunity to rediscover the rich history of this maritime city.

A nautical city full of history and character

As a fortified city by the sea, Den Helder exudes history. Water, wind, and the sea are always nearby. This is precisely what makes this city unique in the Netherlands. Experience this firsthand during Open Monument Day. Whether you enjoy robust architecture, personal stories, or simply a peaceful, meaningful walk: there's something for everyone.

Ship Zr.Ms. Bonaire

Free admission and accessible to everyone

Admission to all participating monuments is free. This makes this weekend an accessible way to get away. You don't have to go far for something special. And whether you come alone, with your partner, or with (grand)children, there are activities for all ages.

Central nave of the town hall of Den Helder

Want to know more? Keep an eye on the program.

The program will be further announced in the coming months. Expect a diverse mix of culture, history, and fun activities. Want to secure a spot on a popular tour? Keep an eye on the news. Some spots fill up quickly.

Discover the history of Den Helder at the Helders Museum

Monument owner? Register your monument here!

Are you the owner or manager of a monument? Register your monument here and participate. This way, visitors can also discover your special location during Open Monument Day.

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