You know who you are;  you probably went to Amsterdam just to walk across the 3D printed canal bridge (before it was removed in 2023). So, now, pack your bags for Switzerland! The Tor Alva or "White Tower" is now open. It's the tallest (30-meters) 3D printed structure in the world — and apparently serves no other purpose, except for being a showcase by the technology Univ. ETH in Zurich for sustainable construction, computational design, and digital fabrication.