This is an abandoned railyard repair workshop somewhere in Belgium. This site had been abandoned in 1979, due to a very important gas explosion that killed one worker. One can still see the place where the explosion occured in the basement of the building. There’s not much left, the building is pretty empty but still a nice place to see.
As usual dor this kind of places, airsofters are using the building as their playground as one can guess by all the little plastic balls spread over the ground. Walls are covered with graffitis, another usual sight in those abandoned places. Next to this building there’s another SNCB, the Belgian rail society, site which is still in use. From the little things I know about it, tit has been built in the early 1900 and is located above an ancient mine exploitation.