My hike in July took me to the South side of Oberkirch, while on the North side sit the ruins of Schauenburg castle. It's a short, but steep, climb from town centre (or you can drive up).
The castle was built at the end of the 11th century by the Duke of Swabia. It saw action mainly in disputes between local lords, most notably after much of the land around the castle was sold to the Margrave of Baden-Baden, around 35 km to the North. It became a ruin following a French invasion in 1689.
Today, a restaurant sits beside the ruin. When I was last there, there was a camera stand to take a clean selfie - you know, the one where you set a timer instead of holding at arm's length. That's where my photo on my professional website comes from.
As is the case from the South side, the castle has a good view of the Rhine plains, and Strasbourg cathedral sticks out. It would have stuck out even more back in the day, without the modern tower blocks. The lords of Schauenburg would have seen the massive gothic cathedral and its monumental spire being built... over the course of a few centuries.