Of the order of Atatürk in 1924, "the first tuberculosis hospital in Turkey as Heybeliada sanatorium opened in 1940 after the further developed with the capacity to 660 beds and 250 staff reached nearly 100 years due to the nature or serving Heybeliada sanatorium 21 Despite the technological conditions of the century in 2005 was closed on the grounds of difficulty transport.

British grave reason de 19 century in the United Kingdom and offering consular Gemlik empire with a rich man who died in 1865 on August 4 by Spiridon Kangelaris built for his wife Sevasti. Using brick and iron on an octagonal plan, neo, a beautiful monument built in the Gothic style. Marble brought from Italy, tombs and burial section at the top of the tomb is a modern inscription. Wife-husband on one side of the monument URLs Kangeleris relief profile portraits, in the other three hundred different types of relief have three angels. Gothic windows inside the mausoleum was decorated with blue pen-weighted, de Kangelaris buried here beside his wife in 1868. Remained unclaimed after the burial. The islanders said here ornate tomb.