This is a paid asset, but now you can download High Hall – medieval Free.
Detail this asset from Unity Store: Original Link
High Hall – medieval v1.0
“If possible, please buy the package to support the developer”
-=High Hall (Medieval)=-
Modular Medieval High Hall, includes:
– modular walls, windows, floors, roof (you can create any width, height halls);
– audio speakers (model);
– audio controller (model);
• PBR Textures 2K;
• Meshes ~300-500 tris;
• Suitable for VR.
Also Medieval Throne Hall