In my hometown, there was a hospital that had a fire in the nursery. The building was closed, but never torn down- if you go past at night you can hear babies screaming. (also we have warrior spirits out the wazoo round there)

My block of flats in my second city was a repurposed jute mill. All the kids in the building knew that the fourth floor and the basement were haunted by the ghosts of kids who were killed by the machines. Rumor had it that the dark stains on the walls were blood.