My boyfriend is coming to visit me next week and after researching the excursion opportunities in Frankfurt I am left confused and undecided. What is even Frankfurt famous for? What is unique about it? Are there excursions that show/tell you something you can't find on the internet? We won't have much time for walking around since I have to work and I am really not that much into conventional city-walking tours as I always get bored after 20min and never remember anything anyway. If you only had approx. 7 hours alltogether for Frankfurt what would be the things/places you would absolutely do/see?
p.s. This is also his first time to Germany, so advices on cool tradtional places with lots of different kinds of beer and bratwurst would be greatly appreciated!