| City | % Correct |
|---|---|
| Oslo | 98%
|
| Ottawa | 93%
|
| Osaka | 91%
|
| Orlando | 90%
|
| Odessa | 76%
|
| Oxford | 74%
|
| Oklahoma City | 73%
|
| Ouagadougou | 72%
|
| Orléans | 63%
|
| Oran | 57%
|
| Oakland | 56%
|
| Omsk | 51%
|
| Oaxaca | 49%
|
| Oulu | 39%
|
| Odense | 35%
|
| Ostrava | 32%
|
| Osh | 26%
|
| Örebro | 22%
|
| Onitsha | 18%
|
| Osijek | 16%
|