The ruins of Spiš Castle | eastern Slovakia This is one of the biggest European castles by area 41 426 m². It was included in the UNESCO list of World Heritage Sites in 1993. Spiš Castle was built in the 12th century on the site of an earlier castle.
Taka a look on a more detailed model of an excavation site on the castle from 2019: https://skfb.ly/6SnUT
The 3D scan of the castle was created in RealityCapture from almost 4000 images.