Frequently Asked Questions

Useful information

The answers to the frequently asked questions can be found here and find the Bunker Day Survival Guide underneath! Is your question not listed? Please contact us via the contact box.

General information

When is Bunker Day?

The new date for Bunker Day is 28th of May, 2022.

How do you deal with the corona measures?

We follow the governmentsmeasures. We don’t know yet what the exact measures will be around due date. We will inform you about this subject around a month in advance.  

What is Bunker Day?

During Bunker Day, the remains, such as bunkers and other elements of the Atlantic Wall along the coast of the Netherlands, are put in the spotlight and opened to the public for one day. Sometimes the bunkers are still clearly visible and accessible, but sometimes also overgrown by nature or located on a private area. During Bunker Day, we make locations accessible and we organize additional educational activities such as guided tours, film screenings and re-enactment.

Why organize a Bunker Day?

Bunker Day is originated in 2014 due to the desire to extend the scope of the (mostly local) initiatives and activities that exist around the Atlantic Wall heritage and to stimulate cooperation between these parties. And that worked! Bunker Day now comprises more than 25 organizations, 110 bunkers from the Wadden Islands to the border of Belgium and attracts more than 15,000 visitors every year.

Who organizes Bunker Day?

The European Heritage Atlantic Wall Foundation is the initiator of the Bunker Day. The organization is done by Donkergroen creators.

What about the bunkers and nature?

Thousands of varying sized bunkers were built at a high rate as part of the Atlantic Wall during the occupation. After the war they were quickly abandoned, demolished, buried under the sand (from the dunes) or otherwise left to become derelict, allowing nature to slowly take over.

Bats in bunkers

It has mainly been bats that have discovered the benefits of safe and frost-free winters in bunkers. The fact that most of the concrete constructions were subterranean meant that they were ideal locations for breeding and shelter during wintertime, providing a safe ‘meeting place’ for male and female bats.

Bats are the only mammals that can fly. Thanks to their special way of life, they can reach a great age, individuals frequently passing 30 years of age. Food for these insect-eaters is scarce in wintertime and so it is essential that they can count on undisturbed shelter for the colder months. Properly maintained bunkers can serve as their dwelling for years.

Of the approximately 20 species, it is mainly the Daubenton’s bat, the lake bat, the whiskered bat and the common long-eared bat that use the Atlantic Wall bunkers and corridors. It is important that the locations used by these species remain undisturbed from August to mid-May (their winter and breeding season).

A bunker must meet a number of standards:

  • The climate inside the shelter must remain constant i.e. frost-free in winter.
  • It should be sufficiently moist so that the bats do not become dehydrated.
  • Any predators should be kept out.
  • Humans should not disturb the shelter.

The preservation of cultural heritage bunkers goes hand-in-hand perfectly with the preservation and expansion of winter shelters for bats, amphibians and insects.

Want to find out more about bats? Check either of these websites: and/or

Is it appropriate to organize Bunker Day while there is currently a war in Europe?

The war in Ukraine puts Bunker Day in a different perspective. The event shows us the value of peace and freedom and tells about the horrors of war and occupation. Bunker Day unfortunately feels more relevant than ever this year. That is why we believe it is necessary to keep sharing the value of freedom and peace.

I have a question for the Bunker Day organization, how can I reach them?

Please contact us via the box below. 



Do I need an entrance ticket for Bunker Day?

Yes, you need an entrance ticket to visit the participating locations. When buying a ticket, you will receive a wristband. This wristband allows you to visit multiple locations on Bunker Day and is only valid when applied to your wrist. 

When can I buy a ticket?

We don’t have a pre-sale this year. You can purchase your tickets during Bunker Day (28th of May) at all participating locations. 

Where can I buy a ticket?

All participating locations sell tickets.

– Schiermonnikoog > ticket sales at Bunkermuseum Schlei
– Terschelling > ticket sales at G28 Visitor Center
– Wijk aan Zee > ticket sales at Dorpsweide
– Dishoek > ticket sales at the entrance of the dunes

Please note!: Take some cash with you since you cannot use your PIN at every location. 

What are the ticket prices?

Adults (13+): €7,50
Children (4-12 years): €4,-
Children (0-3 years): Free

Why do I have to buy a ticket?

You can visit and access all the locations with an entrance ticket. The money earned from the ticket sales will benefit the various organizations that manage a bunker. In this way they can maintain the bunkers for public and future generations. 

I only want to visit one bunker, do I still need to buy a ticket?

Yes, that is the idea of Bunker Day. You have to buy an entrance ticket even if you plan to visit one location. Please note that our entrance fee is equal to the regular entrance fee for many locations. 

 I am a veteran, do I get a discount?

Yes, you will receive one free ticket a 50% discount on the regular ticket price when you can show your official veterans card.


Do I have to register in advance to visit bunkers or for the programme?

No, you don’t have to register in advance. There are some exceptions that for example only can be visited with a guided tour. We will announce these locations here and on the page of the locations in question. 

Which bunkers can be visited? Any recommendations?

All bunkers will be viewed on this website from mid-April. The nice thing about Bunker Day is the freedom to plan and discover the bunkers as wished. Use the location filter to pick an area and decide for yourself which places you would like to visit.  

Not all bunkers can be visited, why?

Unfortunately, not all bunkers are safe enough to visit and sometimes the nature around them is too fragile. Every year we try to add new or different bunkers, so there is something new to see every year.  

Can I bring my dog to Bunker Day?

We recommend leaving the dog at home. In many places it is possible to bring a dog. However, it is not possible to take the dog into the bunker. Someone will have to wait outside with the dog, therefore you cannot visit the bunker together.

Which locations are accessible with a wheelchair or for those with walking difficulties?

We are currently busy with retrieving all the information of the bunkers. When we have a clear overview, we will share it here. 


Remaining questions? Don’t hesitate to contact us!

Bunker Day Survival Guide

Wear suitable shoes

By suitable, we mean sturdy shoes that are good for walking through loose sand and mud. There is a small amount of water on the ground in some of the locations so it's handy if your shoes are waterproof too.

Wear suitable clothing

It's not a good idea to wear your Sunday best to Bunker Day. Some visits require a bit of climbing and clambering before you can get to the location. Loose-fitting clothes make this easier, of course. Additionally, many of the locations have been untouched for some time, resulting in rather dusty interiors. The dust may transfer to your clothes if you happen to brush up against something.

Be on the alert for ticks!

Bunker Day is held during tick season and we hope that the weather will be favourable. Please watch out for ticks if you have exposed skin while walking through high grass, bushes or wooded areas. Long trousers and long-sleeved shirts are recommended. It's even a good idea to tuck your trousers into your socks.

Don't forget your torch

Some of the bunkers haven't been lit since WWII. We do our best to make sure each location has lighting but even then, there are still many dark corners, hallways and rooms that you may want to explore, so make sure to bring a torch!

Watch your step

Bunkers consists of irregularities at unexpected places, holes or, for example, cable ducts. So be careful where you walk! And also be careful of protruding pieces of concrete or iron.

Get your Bunker Day ticket in presales

Preparation is the key to success! If you purchase your Bunker Day ticket in advance, then you will not have to queue on the day. Besides, not every location - even though they all require a valid ticket for entry - facilitates ticket sales on Bunkerdag. You can purchase tickets via this website, or at one of the vendor locations.

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