The former residence of Arthur Guinness, featuring grand wood panelling and staircases, stained glass windows and even a swimming pool.
A steel works in Italy dating back to 1864 and rebuilt after the war, including coke ovens and rolling mills.
A chapel in Wales that has been closed for many years. Everything remains intact inside with some decay setting in.
Ex-RAF and ex-USAF base which retains most of its buildings, hangars, etc and even has some aeroplanes and helicopters remaining on site.
Dating back to the 1920s, the industrial site in Corehem, France developed into a huge paper mill complex including several power stations.
Opening in 1908 the Cardiff City Asylum had space for 750 psychiatric patients. The hospital closed in 2016 after being deemed unsuitable for modern services.