I saved the best for last and decided to give the Berlin Zoo and Aquarium a full day. Tickets were around 14€ for both the Zoo and Aquarium. Looking back at it, no one really checked our aquarium tickets, so I probably could have gotten into the aquarium for free.
I was really impressed with this [...]

Mark, Nang (from San Diego), Harsha (Mark’s friend from Houston) and I went to an Argentinian restaurant near our hostel. The prices were unexpectedly reasonable. We then found out that they had a business lunch buffet for around 7€. There was chicken cordon bleu, smoked salmon, chicken wings, lots of meat dishes I’ve never had [...]