The Old Observatory. Decaying and somewhat hidden away in suburban Liege stands Cointe Observatory. Apparently funds are being gathered to restore this lovely structure...it'd be great to see it in it's original condition.
The Hasard Cheratte coal mine near Liège, Belgium. Closed down in 1977 and slowly decaying ever since. This place is really a paradise for Urban Explorers, beautiful old buildings, lots of character, this place still has a soul Hasard Cheratte by PPJC, via Flickr