The leprosarium of Chios. The current buildings were built in 1910 and it was active until 1959.
UPDATE
These pictures inspired the creation of many articles around the web and were used in even more.
Some of them you can see above:
http://www.environmentalgraffiti.com/news-abandoned-leprosy-hospital-chios
http://www.dailymail.co.uk/news/article-2288913/Inside-abandoned-leper-colony-Haunting-pictures-disease-sufferers-locked-Greek-island.html
http://www.lifo.gr/team/omorfia/36801
http://www.atlasobscura.com/places/lovokomeio-chios-leper-colony
http://www.espressonews.gr/περιεχόμενο/άρθρο/ρεπορταζ/87494/σε-πλήρη-εγκατάλειψη-το-ιστορικό-λεπροκομείο-της-χίου
A few days after they were published, the abandonment of the leper colony of Chios came up for discussion among members of the Hellenic Parliament.
