This is a quickie site, but interesting for its history.
During the cold war, there was something called “Nukleare Teilhabe” (~ nuclear partaking, don’t know the exact term). This allowed countries which did not have nuclear weapons, such as Germany, to be part of the nuclear shield of the USA. Nuclear warheadsand tactical nuclear weapons were guarded by US special forces at top secret sites in Germany, and access codes were also controlled by the US HQs.
In the event of a nuclear strike, the warheads would have been mounted on German carrier rockets, located at missile bases all over (west-) Germany. Transport of the warheads was done with Chinook helicopters which landed directly in front of the shelters where the warheads were located.
These high security sites were called “Special Ammunition Site” or “Sonderwaffenlager”. They all have similar topology: a guard house with a concrete watchtower, several smaller watchtowers and double security perimeter. The guard house was a little fortress, with loopholes beneath every window for close combat defence.
Inside the inner perimeter were two or more above-ground shelters where the nuclear weapons were stored, secured with a big steel cage in front of the blast door.
After the cold war, most of these sites were abandoned. This is one such SAS, a small one with only two shelters.
One of the smaller watchtowers
Shelters for nuclear weapons
The inside is not very spectacular
Guard house and concrete watchtower, notice the loopholes in the tower, and beneath the windows