Thank you, Iceflower.
Yes, there are lots of such bunkers dotted along the entire west coast of Jutland.
They are almost indestructible! Some have over time been more or less claimed by the sea, other have been covered by sand, but a lot are still there and people go inside to have a look, except for those that are closed off because they are too dangerous.
The Germans constructed their bunkers from ready made plans based on their function, so they vary in shape and sizes from small pill-boxes to huge artillery emplacements. Often using battleship guns, hence the Tirpitz bunker complex.
The Tirpitz complex was there to protect the harbor of Esbjerg which is the only Danish harbor big enough to accommodate large ships along the entire west coast of Jutland, so the town was a vital place to protect.
There is a similar heavy artillery emplacement way up north in Jutland which together with a similar emplacement in Norway was supposed to dominate the entrance to the Baltic sea.
The entire west coast of Jutland is very well suited for an amphibious landing, but for reasons I could use a similar long post on, that was not a serious consideration by the Allies during WWII.
The bunkers were mainly build by Danish contractors, and even though it was claimed, certainly after the war, that the workers sabotaged the construction, that I'm afraid is more like wishful thinking... They are very well build! The Germans weren't stupid, of course they checked the quality.
On the other hand the Allies knew the location of every single bunker, minefield and even barbed wire fence.
But the bunkers are today a part of the scenery and those who have ended up in the sea are very much appreciated as a nesting ground for sea gulls and clams.
Some have been turned into artworks:
In many of them you can go inside, but watch out for scratches, they can easily become infected. And don't expect any reimbursement. If you go inside a bunker, the responsibility is yours.
Ironically the West Coast is crawling with German tourists, so some of the people you see in these pics are very well Germans:
This is one of the battleship guns, which were to be placed in Northern Jutland:
And this is where it was supposed to have been placed:
You can find entrances to bunkers in the weirdest places. In fact some summer cottages come with a bunker:
Eventually the sea will claim the bunkers:
Or the sand: