As is typical for abandoned structures, this warehouse is suggested by signs to be off limits. For some reason, the approach from the York County Heritage Trail has even more than usual, leading one to believe that something important rests inside that the owners don't want stolen or defaced. On the contrary, while the two white doors on the front are closed, a peek through the wide-open doors on one side and the back reveal only a giant empty room, and the open door on the remaining side gives a view into an empty office. So, if there was a UFO (or whatever) inside, then the Illuminati (or whoever) moved it out long ago. I suppose that there's still the risk of people intruding to spray graffiti all over the interior, but this stretch of the trail seems not to attract that sort of element.
It just attracts the slightly more savory element of people willing to trespass and take pictures.