Berlin, Germany
Berlin is a fantastic location with a lot of urban walking to be done, although I recommend comfy shoes! There is a huge amount to see out there, both beautiful and haunting with the history of Germany.
While out there I visited the Berlin Zoo which was fantastic and had a huge variety of animals. I took a bus tour around the city. Visited a lot of the holocaust locations which were very emotional to walk through.
A fun thing I randomly did was to watch a ballet at this grand place, it was fantastic.