| name | image | style | date demolished | type | use | administrative division | continent | date completed | date Start construction | Website | Height (m) | city | Country | latitude (°) | longitude (°) | Original_owner/Owner/Protection | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Palace of Castel Gandolfo |  | Fortified Castle | Religious | Lazio | Europe | 1200 | website | Castel Gandolfo | Italy | 41.7471000000 | 12.6503000000 | Carlo Maderno, Vatican City | Map |