This is a great tour and if you get the same (old funny) tour guide who jokes and makes comments like a stand up while you view all the areas you’ll have a great 90 mins, it’s not cheap but you get history, amazing views, a couple
Of laughs and if it’s cold or wet you can get to see the city in the dry (although fog and mist might scupper your views) . Give it a go and enjoy the BMW bridges from below.