You don't need to build yourself a time machine to travel into the past — just venture to Hagen Westphalian Open-Air Museum. This open-air museum allows you to walk through history and find out what life was like once upon a time.
This open-air museum in Hagen comes recommended by many travelers, so be sure to put it on your to-do list. Don't think that's all there is to do here, though. There are loads more places waiting for you to check out after Hagen Westphalian Open-Air Museum. Spielbank Hohensyburg, Hohenlimburg Castle, and Ruine Hohensyburg are close by.