The Kroontjesbunker: secret command center in the dunes
De FL250 Flakgruppenkommandostand, bijgenaamd Kroontjesbunker, ligt verscholen in de duinen van Huisduinen. De bijnaam dankt de bunker aan de opvallende vorm van de toren, die lijkt op een kroon.
Track flight movements with precision
Air raids were coordinated in the bunker during the Second World War. Using a glass plotter wall, soldiers relayed flight movements to anti-aircraft positions. The data came from radar stations along the coast and from positions further afield, such as Zandvoort and Terschelling. This created a chain of observation points that could accurately track every flight movement.
In recovery: future museum in the making
Three dedicated volunteers are working on restoring the bunker to its original state. The goal is to turn the Kroontjesbunker into a small-scale museum. The interior still exudes the atmosphere of a high-pressure command center.
Mammoth radar
Discover the Mammut radar in the Kroontjesbunker and dive into a remarkable piece of war history. View a miniature version or a special presentation of this German radar system. You will discover how this advanced radar operated during World War II.
The Mammut FuMG 42 had an enormous fixed antenna wall. This allowed aircraft to be detected up to approximately 300 kilometers away. During your visit, you will learn more about this remarkable warfare technology.
Can be visited on selected days
De bunker is slechts een paar keer per jaar open voor publiek. Kijk voor actuele openingstijden en updates op de Facebookpagina Flak Gruko. Tip: neem een zaklamp mee voor een beter zicht in de duistere ruimtes.
Watch your route – and the nature reserve
The Kroontjesbunker is located in a protected nature reserve. Therefore, please stay on the marked walking paths. Respect the nature and the silence of this special place.
This is how you reach the Kroontjesbunker
- By car: Park at Fort Kijkduin (Admiraal Verhuellplein 1, 1789 AX Huisduinen). From there, follow the signs towards the bunker.
- By bike or on foot: Take the side street off Duinweg (at number 34, in front of The Baron Crown hotel). Signs will guide you here as well.
Opening hours
- Saturday, September 12: 10:00 – 17:00
- Sunday, September 13: 10:00 – 17:00
Background information
- Type of monument: Defensive structure
- Original function: Hoofdkwartier Duitse luchtverdediging
- Construction period: 1944
- Current position: Crown bunker
