Highly, highly recommend taking the brewhouse tour! I booked it on TripAdvisor and it was an…read moreexcellent activity since I was traveling alone and didn't really speak German but still wanted to try some beers. The tour guide Elise was awesome, ordered beers for us and educated us on brewhouse culture, and our group gelled immediately. We went to a variety of brewhouses and I learned so much about beer and Cologne, even though I've been on many brewery tours before. Definitely check it out.