Pavilionul de Bai in Romania's Valcea County looks like it was once a home fit for a prince or a king, but it never was. Instead, it was a mental health treatment facility, and it engaged in some pretty questionable practices. Electrotherapy and water torture were once practiced within its walls.
Not all of its history is horrible. After 1915, some pioneering work was done here on the treatment of lung diseases. Economic decline in the area during the Communist era saw funds dry up, and the building left to collapse in on itself.