| Rank | Population | Country | Hint | City | % Correct |
|---|---|---|---|---|---|
| 8 | 168,000 | United Kingdom | University, English Dictionary | Oxford | 87%
|
| 14 | 115,000 | France | There is a new one in Louisiana | Orléans | 82%
|
| 1 | 292,000 | Czech Republic | Coal, Moravia | Ostrava | 76%
|
| 6 | 177,000 | Denmark | Hans Christian Andersen | Odense | 70%
|
| 3 | 201,000 | Finland | Major city in northern Finland | Oulu | 69%
|
| 4 | 198'000 | Spain | Capital of Asturias | Oviedo | 66%
|
| 20 | 71,000 | Belgium | Largest on the Belgian coast | Ostend | 53%
|
| 9 | 164,000 | Germany | St. Lamberti Church | Oldenburg | 47%
|
| 10 | 162,000 | Germany | Erich Maria Remarque | Osnabrück | 44%
|
| 2 | 211,000 | Germany | Gasometer, International Short Film Festival | Oberhausen | 39%
|
| 11 | 146,000 | Sweden | Water park Gustavsvik | Örebro | 39%
|
| 17 | 100,000 | Czech Republic | Locally Holomóc or Olomóc | Olomouc | 38%
|
| 19 | 84,000 | Croatia | Major city in Eastern Croatia | Osijek | 38%
|
| 12 | 124,000 | Germany | Leather production, river Main | Offenbach am Main | 34%
|
| 5 | 196,000 | Romania | Episcopal Palace | Oradea | 34%
|
| 16 | 102,000 | United Kingdom | Residential town in Greater Manchester | Oldham | 33%
|
| 15 | 106,000 | Spain | Northwestern Spain near Portugal | Ourense | 31%
|
| 7 | 173,000 | Poland | Lake Ukiel | Olsztyn | 27%
|
| 13 | 119,000 | Poland | One of the oldest cities, "Polish Venice" | Opole | 25%
|
| 18 | 90,000 | Netherlands | Three-letter city in North Brabant | Oss | 21%
|