Take the lift to the top and work down. Great views out of the windows. I've been to museums that the view outside is the best bit, but this isn't one of them. Saw some aspects of Klimt, that I wasn't aware of. Enjoyed the humour of Schiele and reading about his comradeship with Klimt. Good café for those with vegetarian / vegan tastes, which can be accessed without a ticket from the outside.