There's a good chance that men died in that bunker. That makes it hallowed in my opinion, regardless of which side occupied it.
Understand your opinion and respect it, even though that's a Danish coastal defense and was not used in any defense of an invasion.
But, when pointed in that direction, you must realize that someone has died in just about every standing structure this species has ever made. Remembrance is fine, but moving
forward is human. That bunker should have been destroyed long ago, IMO.