The assignment of the project was to create an observation tower with interactive war historic exposition. The location is richly marked with history, there is a bunker from the second world war, and a cemetery from the first world war. The building empowers the value of these historic objects via augmented reality, which is created by projections onto vertical rods and projection onto fog. The fog projections are interactive, the movement of people is scanned, and they react to it. The tower is mainly transparent, it consists of vertical and curved tubes, which create stairways, open and closed spaces. The initial curve forms were created with digital instruments via vector field. The purpose of the building is not to inform the viewer, but to offer a historic experience, which took place in that same spot, from where it is observed.