If you ask me all that info if it comes to visiting buildings inside you also find on Google Maps, tripadvisor and the tourist information of the place you visit. It is impossible to visit everything or even like what "everyone" seems to visit. And there is no need to.
I lately heard that the biggest disappointment of tourists is visiting musea. (So far I am good, I only visit what is of my interest, since everything is visible in the internet as well. So for me no Madame Tussaud).
Enjoy your journey.
I still like to find more information before visiting any place. I have such to do list, I know that sometimes it is not really what we expected but without such information we may lose interesting things. I do like some museum, of course, depend on what it is or sometimes just to have some rest in the cafe of museum or just have a sit on sofa and study painting, I always wonder what the person who did any art was thinking about while creating them :)
Well, most artist are obsessed especially if they focussed on drawing/painting so the question is if the thought at all.
Today and artist told me it is a calling. I agree. The "bad mood" arrives if not able to create and if so it has to be finished (most of the times).
Most likely it is the unconscious at work, which is the reason to continue or like Van Gogh said: Art drives me crazy, but what else can I do.
A happy journey.