Aleppo Citadel -- Photographic Representation

Things to think about when you look at these photos:

1. It's friggin' huge
2. The only way in is over that steep bridge hanging over the moat
3. The moat is at least 50 feet deep from the street side, making it way the hell deeper from the other side
4. The hill the thing is on is manmade!

Note the scale on the satellite shot from Google Maps. Each full measurement unit is 100 metres.