BT-11 (Beobachtungsturm-11)

This is a tower widely used by the East German government along the border dividing east and west Germany from each other. This is a small version displayed at a museum. The ones that where actual used are higher. Wikipedia Article about the Inner German border mentioning this type of tower. https://en.wikipedia.org/wiki/Inner_German_border My 3D model from photos generated with photogrammetry software 3DF Zephyr v4.530 processing 18 images Source: Objaverse 1.0 / Sketchfab