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| Building Mass Height | 36 m |
| Architectural Height | 36 m Source: Kartverket database over aircraft obstacles, accessed online at www.norgeskart.no |
| Building Mass Height | 36 m |
| Completion | 1299 |
| Structural Form | castle |
| Main Usage | government office, history museum |
| Status | existing |
| Address | Akershus Festning |
| Smart Address | Festningsplassen 1 |
| City | Oslo |
| Country |  Norway |
