Copenhagen, Denmark
We usually begin to get the real feel of the local transportation system on our third day in any given city. Instead of fumbling around figuring where to go and how to get there, by this time we walk into stations like locals (Ha! We wish!), find the right tracks and hop on the correct train -- going in the right direction, hopefully. By this time, we start to feel pretty confident and then, boom! We change cities!
We knew exactly what we wanted to do tod...