Interactive exhibitions make visitors actively participate in museums. 3D technologies are today mature and robust and provide endless opportunities: the numerous new variants for input (gesture, multi-touch, tangibility, 3D acquisitions) and output (projectors, see-through displays, 3D printers) make it possible to merge real and virtual worlds seamlessly. The involved activation of multiple senses builds high visitor engagement through all ages. In this talk, we show and discuss the enormous potential of integrating interactive 3D content into exhibitions and online visits, and we share recent experiences of the V-must.net European Network of Excellence.