Schleswig-Holstein
In 1876, German industrialist Max Duttenhöfer founded the explosives factory "Düneberger Pulverfabrik" near the German city of Hamburg, where gunpowder and other explosives were produced during both world wars.
Erprobungsstelle See
From 1928 until the end of World War II, the German army, hidden deep in a remote corner of the country, tested aircraft, water, and amphibious vehicles.
- Contains Practical Information
- Contains Background Information
Read the full story for members
- Get access to the full story and all photos of hundreds of destinations.
- Unlock all the practical information you need to plan a legal visit
to this venue, including GPS coordinates, address, public transport etc. - Discover nearby destinations and over 600 destinations, including this one, on a detailed map.
Become a member unlock full access for € 50 a year
Already subscribed? Log In
Plan your visit for members
Discover more
Find sites in
or discover more
Get the latest stories straight to your inbox
Related articles
Latest from the blog
On the occasion of International Art Nouveau Day, celebrated each year on June 10, a look at how this ornate architectural movement found its way into the most unlikely of places like coal mines, power stations, and railway yards and the long, sometimes heartbreaking battles to save what remains.
All photos and stories are copyrighted. Of course, linking to articles on the site is possible and allowed.
If you would like to use photos or articles from this website, please contact bart@hiddenmonuments.com.
© 2003-2026 Hiddenmonuments.com