Gibraltar has a pretty crazy airport. It is directly on the Spanish border and both sides of the runway drop off into the water. What's even crazier is that the main road - the one in and out of Gibraltar goes directly across the runway! When we left Gibraltar we literally had to walk across the runway (along with TONS of others). Apparently, the road simply gets shut down anytime there is air traffic (I think I heard mentioned that there are 4 flights a day landing from the UK). If that's not crazy I don't know what is.