Here you can find a lot of stone and brick debris heaps and separated broken parts.
Triangle counts:
Bricks heap 1 - 11890 tris
Bricks heap 2 - 8470 tris
Bricks heap 3 - 9670 tris
Bricks heap 4 - 5690 tris
Bricks heap 5 - 2320 tris
Stone heap 1 - 10480 tris
Stone heap 2 - 9550 tris
Stone heap 3 - 8970 tris
Stone heap 4 - 4650 tris
Stone heap 5 - 3930 tris
Stone heap 6 - 6200 tris
Stone heap 7 - 2020 tris
Stone heap 8 - 520 tris
Stone heap 9 - 420 tris
Separated parts (total) - 7330 tris