The town church of St. Michael offers a lot of detail. I 📷 like you again and again. The weather vane, the small door with stairs at the back, the archway and the portals are great 📷 It's also worth taking a look inside.
The Landgrave and Windknollen are always worth a hike, this can be combined well with a city tour, the Landgrave can be reached from the center in a few minutes. There are some nice hiking trails up there.