Because the travel day was so tough on the kids, we opted out of a castle visit in Heidelberg and decided to stop by Jump Inn, an indoor play area for kids. When we walked in, the place was enormous!
The kids played mini-sized air hockey, flew down a slide simulating sledding, jumped on an eight-person trampoline, and ran through adult-sized tunnels for parents and kids to have fun together in their intricately designed maze. They also served enough food and beer for hours of fun.
We stayed for two hours and felt completely exhausted, while other German families can make an entire day trip out of a visit to Jump Inn. But again, the kids enjoyed every minute of their time.