I'm armchair travelling quite a bit at the moment, courtesy of teh internets. I am obsessed with urban exploration, despite not having the actual cojones to do any of it myself. I have particularly admired the Turbozutek guys who broke into Glasgow zoo a few months after it closed down and accidentally found out they were yet to evacuate all the tigers. Unfortunately those photos are long gone off the internet, but there are more from around Glasgow, and the zoo, found here.
Anyway, here is some exploration of the places you don't usually see, or times long gone, of three of my favourite cities: