Freiburg - drains and trains

Freiburg is a cool little city tucked down in the extreme south-west corner of Germany.  An old university town, a lot of stuff is crammed within the old city walls.

One very prominent feature is the system of stone drains incorporated into most of the cobbled streets in the old city.  It being reasonably wet right now, there is a lot of activity in said drains!  One must be careful not to twist an ankle in them, or on the numerous rail tracks.  The large army of bikers seems to do just fine (almost entirely sans helmet).

Drain and train in close juxtaposition.

Adorable scene of kids playing with boats in the drain.

Beware of alligators!