The mining museum was actually especially fun. Like any museum the exhibit provides clear context for the signs, and in the mining museum especially much of the technical jargon was pretty guessable and some chemistry terminology I already knew in German (being a chemist), so I really had a great illusion of competence.

You didn't only have the illusion of competence! Remember how lost Steffi and I were when it came to all those pumps and other technical stuff? We looked at it, shrugged, said "oh, look the pretty colours - it's blue!" - and you walked around looking like you actually understood how those items were supposed to work! :)