Fortress of Doboj
| Gradina Fortress | |
|---|---|
| Doboj, Republika Srpska Bosnia and Herzegovina | |
| Doboj Fortress | |
| Site information | |
| Type | Hilltop castle | 
| Owner | The Government of Bosnia and Herzegovina | 
| Controlled by | Bosnian Kingdom (1230-1476)
 
 | 
| Condition | Repaired (Protected as National Monument of Bosnia and Herzegovina) | 
| Location | |
| Coordinates | 44°44′13″N 18°05′17″E / 44.737°N 18.088°E | 
| Site history | |
| Built | 13th century | 
| Built by | Duke of Usora | 
| In use | until at least 1945 | 
| Materials | hewn stone (ashlar) | 
| Battles/wars | Battle of Doboj | 
| Designations | |
| Official name | Old Doboj fortr, the architectural ensemble | 
| Type | Category II cultural and historical property | 
| Criteria | A, B, C i.vi., D i.ii.iv., F ii., G i.v., I i. | 
| Designated | 31 August 2005 (?th session) | 
| Reference no. | 2583 | 
| Decision no. | 05.2-2-203/05-6 | 
| State | National Monuments of Bosnia and Herzegovina | 
Doboj Fortress (Bosnian, Croatian and Serbian: Dobojska tvrđava / Добојска тврђава) or Gradina (Градина) is located in the city of Doboj, Bosnia and Herzegovina. Throughout its turbulent history, the fortress has been burned and ransacked at least 18 times as per official records. Of note is that Doboj fortress was considered to be a royal Kotromanić property, unlike Great Bosnian Duke Hrvoje's Zvečaj fortress or Sandalj Hranić's Blagaj fortress, which were centers of their respective duchies.