Back in 1972 I used Ettlingen in southwest Germany as a base to go to Austria, Switzerland and France. The image above shows Bad Herrenalb south of Ettlingen. This is at the northern end of the Black Forest (Schwarzwald).
There are some old buildings of note in the town but a higher elevation gives us an even better vantage point. Ettlingen has a streetcar service that takes you into the city of Karlsruhe. City life has its points of interest but I love nature and the mountains the best of all. - V