| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Burg Arnesvelde | Schleswig-Holstein | Europe | uncertain 10th century | website | Ahrensburg | Germany | 53.6586000000 | 10.2331000000 | Map | ||||||||
| Schloss Ahrensburg |  | Various | Schleswig-Holstein | Europe | 1585 | website | Ahrensburg | Germany | 53.6801000000 | 10.2401000000 | Map |