If museums are on your list of things to see in Betschdorf, then you might want to head to Betschdorf Pottery Museum. If you want to see more of the museums in Betschdorf, Maginot Line isn't far either.
Galopprennbahn is in the heart of Iffezheim, so why not stop by during your stay. If you'd also like to explore some of the parks in Iffezheim, New Britain Park is nearby.