Strasbourg is a very walkable city and we certainly enjoyed walking and looking at all the interesting sights. The architecture in Strasbourg is very different from what we usually see in the south of France, it seems to be more typically German.
The Ill River flows around Strasbourg, much like some cities have roads circling around to create a center city. There are sightseeing boats - however, that was not on our agenda this time - maybe when it is warmer in the summer?
Here is a photo that shows a lock for the river. (Look on left side, just below center to see.)
The Cathedral Notre-Dame is an example of Gothic architecture and has a tower with an outside clock.
There is also another clock, an astronomical clock which is located inside the Cathedral. This clock is beautiful - it dates from 1843.