The Shrine of the Aquila is BIG, well, tall anyway. I would estimate at least equal to a 3 storey COD building. It comes in the classic L shaped ruin footprint so you could combine two to make a bigger version. The "wall" that features the double door is basically a huge Imperial eagle done in a slightly more angular fashion. BIt like Judge Dread's shoulder pad.

The blastscape aren't just terrain, they also represent the affects of some of the stratagems. For example there is a longer narrower trench type one that is caused by the giant orbital cutting laser that can fire down and hit models in a strip X inches long. Another one represents asteroids ( meteorites i would have thought but, hey..) and so on.