Photo: GetYourGuideThis immersive virtual-reality experience whisks you back through nine hundred years of Frankfurt history, letting you fly over the medieval city, the coronations and the wartime destruction from a moving platform with a VR headset. It is a fun, family-friendly forty-five minutes that brings the past of the city to life. Book a slot ahead as groups are small, and it makes a great primer before you explore the real old town.