Aye, AS is dead on. There are many ways to optimize a Bryce scene, to make it flow better in Bryce AND for saving purposes. I love the geometry work, and I think your brick texture is nice, but the scaling is a bit off. Think about how big the individual bricks look on the castle walls, compared to the doorway/entryway? They would be the size of a house, HUGE! I understand it's a work-in-progress, though. I can't wait to see how it turns out! I like the crenelations and corner towers, very cool...