With Freiburg Germany as our base, we also traveled to Basel. It was a short train ride away and three round-trip tickets were less than 35€. Basel is, of course, an ancient and beautiful city with the Rhein running through it. When I was there 12 years ago I discovered that people will pack their clothes into water-tight, inflatable bags and float down the river on the hot summer days. I did it then, but I was a little leery of trying that with a backpack full of Nikon equipment.
The Basel Minster is gorgeous. My wife was the first to discover the memorial to the young graf and his mother and it brought to mind our own son’s early demise.