i saw a house on the travel channel somewhere in hawaii that had a reef pond. the cool thing was that it was built close to the house and the basement had a huge viewing window. so it was like having a pond and aquarium.
that would be great, but i'd be goin nutz for a side view, i couldn't stand only looking down from above, cant try and find all the cool things that hide under everything, but thats just me, would love to do it here, but i don't think a reef would fare well with the snow here