That has to be in Vienna, Austria. They are anti air installations built during ww2

Edit: yep

Reading up on it it could also be in Berlin or Hamburg. The ones in Vienna were in the middle of a park when I was visiting. It was a bit surreal all these families picknicking there, their children running around playing, beneath these enormous military buildings.

It looks like this

Coming to Amsterdam for a messy night?

+ getting trashed

= 140 euro fine

+ criminal record

= fewer prospects

So coming to Amsterdam for a messy night?

Stay away

I love how you can hear the Dutch accent oozing off of the text.