| Subject |
|---|
| oasis [1] |
| oáza [1] |
| obecný rozhlas [1] |
| observatory [1] |
| obytný objekt [1] |
| obyvatelná střecha [1] |
| odpočívadlo [1] |
| open air theatre [1] |
| open space [1] |
| open-air theatre [1] |
| opening [1] |
| optic [1] |
| optics [1] |
| optika [2] |
| oslava [1] |
| památka padlých [1] |
| pamětníci [1] |
| Park [1] |
| park [2] |
| partisan [1] |