Glenn Dale Hospital was opened in 1934 for TB patients. After TB was cured, it became a nursing home for people who were very ill. There are 23 buildings, including treatment buildings, patient dorms, nurses houses, laundry, chapels and morgues. They also had tunnels underneath all the buildings to transport bodies, patients and so nurses could go back and fourth. Glenn Dale is thought to have been one of the most beneficial TB hospitals because of it's many terraces where they could move beds out too so patients could get sunlight. In 1976 the building was checked for safety, and quickly they realized that it was very unsafe because of cramped living quarters, lead paint and asbestos. The cost to repair and make it more safe would be 23 million dollars. They had 370 patients at that time so instead of repairing the safety issues they started to reduce patients until it closed in 1981 and has been abandoned since then. A bill was passed in the county that Glenn Dale is in allowing a developer to make something happen with the property. I don't think anything is happening with the property yet though. The property is reportedly haunted, and many people talk about scary experiences they have had like hearing voices and one police man shot at something that wasn't there.
Glen dale is very dangerous, there is a lot of asbestos and caving in floors and ceilings and many rats, rodents and bats. The police patrol the area, but I think many doors and windows are open so it would be easy to get into. I would recommend checking for police and also parking far away so no one is suspicious that someone is in the building.