I often take this type of bus tour when I come to a new city. I find them helpful in getting to know the lay of the land and plan for things to explore more fully. City Circle was recommended by our hotel. We were however very disappointed. First, we found out after buying the tickets that due to a marathon, several stops were to be bypassed. We dropped off at an early point on the tour walked around for a few minutes and then returned to the stop. It took 30 minutes for the next bus to arrive. The employee at the stop knew nothing about when to expect another bus. When it arrived, there were no seats so we stood and could not listen to the headset. At the next stop, we got off and waited for another--this bus sped through four stops so we had to get off and walk back to the boat tour. The boat tour was not marked and we had to search it out. Boat tour was lovely with an attentive crew. We then waited again for another bus so one more stop and the tour day was over. It was expensive, poorly run. so for Berlin--get on the great train/subway system and take your phone! Avoid these folks. read more