| Genre: |
| Built / Opened: 1936 | Abandonment: n/a |
| Closed: n/a | Status: Abandoned |
| Age: 77 years | Region: Italy  |
| Genres: Sanatorium / Isolation Hospital, General Hospital | |
| 1 Gallery | |
| Built / Opened: 1870 | Abandonment: 43 years |
| Closed: 1970 | Status: Abandoned |
| Age: 143 years | Region: Ferrara Italy |
| Genres: State School / Developmental Center, Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1905 | Abandonment: 51 years |
| Closed: 1962 | Status: Abandoned |
| Age: 108 years | Region: Switzerland  |
| Genres: Sanatorium / Isolation Hospital, Military Hospital | |
| 1 Gallery | |
| Built / Opened: 1899 | Abandonment: 21 years |
| Closed: 1992 | Status: Abandoned |
| Age: 114 years | Region: Germany  |
| Genres: Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1892 | Abandonment: 29 years |
| Closed: 1984 | Status: Abandoned |
| Age: 121 years | Region: Goslar, Niedersachsen Germany |
| Genres: State School / Developmental Center, Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1896 | Abandonment: 18 years |
| Closed: 1995 | Status: Abandoned |
| Age: 117 years | Region: Germany |
| Genres: Sanatorium / Isolation Hospital, Military Hospital | |
| 1 Gallery | |
| Built / Opened: 1910 | Abandonment: 20 years |
| Closed: 1993 | Status: Abandoned |
| Age: 103 years | Region: United States of America  |
| Genres: State School / Developmental Center, Sanatorium / Isolation Hospital, Juvenile Detention Center | |
| 2 Galleries | |
| Built / Opened: 1922 | Abandonment: 28 years |
| Closed: 1985 | Status: Abandoned |
| Age: 91 years | Region: Marriottsville, MD United States of America |
| Genres: State School / Developmental Center, Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1910 | Abandonment: 37 years |
| Closed: 1976 | Status: Abandoned |
| Age: 103 years | Region: United States of America |
| Genres: Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1909 | Abandonment: n/a |
| Closed: n/a | Status: Abandoned |
| Age: 104 years | Region: United States of America |
| Genres: Sanatorium / Isolation Hospital | |
| 5 Galleries | |
| Built / Opened: 1898 | Abandonment: 13 years |
| Closed: 2000 | Status: Abandoned |
| Age: 115 years | Region: Beelitz, Brandenburg Germany |
| Genres: Sanatorium / Isolation Hospital, Military Hospital | |
| 1 Gallery | |
| Built / Opened: 1900 | Abandonment: 21 years |
| Closed: 1992 | Status: Abandoned |
| Age: 113 years | Region: Germany |
| Genres: Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1927 | Abandonment: 22 years |
| Closed: 1991 | Status: Abandoned |
| Age: 86 years | Region: Germany |
| Genres: Sanatorium / Isolation Hospital, Children's Hospital, Orphanage | |
| 1 Gallery | |
| Built / Opened: 1885 | Abandonment: 50 years |
| Closed: 1963 | Status: Abandoned |
| Age: 128 years | Region: Bronx, NY United States of America |
| Genres: Sanatorium / Isolation Hospital, Juvenile Detention Center | |
| 1 Gallery | |
| Built / Opened: 1936 | Abandonment: 26 years |
| Closed: 1987 | Status: Being demolished or renovated |
| Age: 77 years | Region: Tombeek, Brabant Belgium  |
| Genres: Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1923 | Abandonment: 21 years |
| Closed: 1992 | Status: Abandoned |
| Age: 90 years | Region: Hanson, MA United States of America |
| Genres: Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1907 | Abandonment: 21 years |
| Closed: 1992 | Status: Abandoned |
| Age: 106 years | Region: United States of America |
| Genres: Sanatorium / Isolation Hospital, General Hospital | |
| 2 Galleries | |
| Built / Opened: 1902 | Abandonment: n/a |
| Closed: n/a | Status: Abandoned |
| Age: 111 years | Region: United States of America |
| Genres: Psychiatric Hospital, Sanatorium / Isolation Hospital | |
| 1 Gallery | |
| Built / Opened: 1905 | Abandonment: 4 years |
| Closed: 2009 | Status: Abandoned |
| Age: 108 years | Region: United States of America |
| Genres: Sanatorium / Isolation Hospital | |
| 2 Galleries | |
| Built / Opened: 1910 | Abandonment: 20 years |
| Closed: 1993 | Status: Abandoned |
| Age: 103 years | Region: United States of America |
| Genres: State School / Developmental Center, Sanatorium / Isolation Hospital | |
| 1 Gallery | |
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