Danvers State Hospital opened its doors in May of 1878. When it opened the hospital practiced humane treatments for the mentally ill, such as gardening and exercise regimens. However, due to the overcrowding of patients, Danvers devolved into an unsanitary, and dangerous place for both the staff and patients. Rumor has it that it that in the years since its doors finally shut, it’s become known as one of the most haunted buildings in the world. Check it out for yourself.