| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gronenburg | Motte and Bailey | Groningen | Europe | website | Groningen | Netherlands | 53.2148000000 | 6.5955830000 | Map |