Penta castles of The Lake - WIP

Penta Castles of the Lake (work in progress),
is a freestyle level design, modeling, architecture and lighting exercise, inspired by Tenochtitlan the Aztec empire capital and Vauban fortresses. The blockout was made with Blender, then the inside parts and detail modeling was procedurally made in Houdini.
Almost every floors and rooms are coonected through bridges, stairs or doorways, making these castles gameplay friendly. The walkable area is nearly 4,5km² with the highest tower rising above 530 meters.