The places time forgot: Extraordinary abandoned buildings from 'urban explorers'

The popular photography pastime of 'urban exploration' sees snappers wandering abandoned mansions, factories and theatres to capture a relic of the past. The derelict buildings offer a glimpse into a world without life but where mementos of the humans who inhabited these spaces remain. These photographers, who are members of the Flickr group 'Yahoo's Picture Of The Day', have chosen to keep their locations secret. Take a look at a fascinating snapshot of our past: