The Smallpox Hospital

The Smallpox Hospital (sometimes referred to as the Renwick Smallpox Hospital and later the Maternity and Charity Hospital Training School) is an abandoned hospital located on Roosevelt Island in New York City. Designed by architect James Renwick, Jr., the 100-bed hospital opened in 1856, when the area was known as Blackwell's Island. A century after it opened, the hospital was closed. The building eventually fell into disrepair. [Source]

Abandoned Mental Hospital

Interestingly, in populated areas such as America and the European Union a lot of empty desolate complexes, buildings, factories, and even cities. Destroy them more expensive than leaving to face oblivion.
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