10/17/2026
No app. No headset. Just a transparent panel and the right angle.
At Kruševac Fortress in Serbia, a simple line drawing on a transparent panel aligns with the surviving ruins of the medieval Donžon Tower, revealing what the structure may have looked like centuries ago.
Part of the “Window into the Past” project, installed in 2019, the display recreates the tower's former appearance without physically rebuilding it.