Dublin Castle has been a constantly developing architectural entity from its foundation in the 12th century up to the present day. Because of the huge array of buildings on the site, the Castle like Trinity College is subdivided into smaller more accessible divisions.
| Year | Architect | Building |
| - | - | Medieval and 17th Century Castle Developments |
| - | - | Dublin Castle Lower Yard |
| - | - | Dublin Castle Upper Yard |
| - | - | Dublin Castle State Apartments |
| - | - | Dublin Castle Garden Front |
| - | - | Dublin Castle Ship Street |
| 1807 | Francis Johnston | Ship Street Entrance |
| 1807 | Francis Johnston | Chapel Royal |
| 1832-34 | Jacob Owen | Carriage Block |
| 1838 | Jacob Owen | Carriage Office |
| - | - | Conference Centre |