Oakville	Oatlands	Oaxaca	Obbacio	Obbacio
Obersalzberg	Obersalzburg	Obersasbach	Oberursel	Ocana
Ochakov	Odense	Oder Neisse Line	Oder Neisse Line	Odessa
Odessa	Offa's Dyke	Ohio	Ohio Valley	Oiselle
Okayama	Okhamatov	Oki Islands	Okinawa	Okinawa
Oland	Oldenburg	Old Fort	Oldham	Old Sarum
Olesko	Oliva	Oliva	Ollerton	Olmutz
Olmutz	Olomouc	Olomouc	Oltenitza	Olutz
Olympieum	Omagh	Omaha Beach	Omaha	Omah Beach
Omayyad Mosque	Omdurman	Omdurman	Oneglia	Ontario
Oosterweel Spain	Opequon Creek	Oporto	Oporto	Oppenheim
Oppenheim	Orange Free St	Orange Free St	Orange Riv Col	Orange Riv Col
Orange River Co	Oran	Oranienburg	Oran Spain	Orantes
Oran	Oran	Orbiston	Ordzhonikidze	Oregon
Oregon	Orel	Orel	Orel	Orenburg
Orford	Orgreave	Orissa	Orkney	Orkney Islands
Orkney	Orkneys	Orkneys	Orkneys	Orkneys
Orlando	Orlau Frankenau	Orleans	Orleans	Orleans Gap
Orleans	Orleans	Orleans	Orleans	Orlov
Ormonde	Ormond	Ormskirk	Ormuz	Orontes
Orontes	Orpington	Orthez	Orvieto	Orvieto
Orwell	Osaka Castle	Osaka	Osbourne	Osirak
Oslo	Oslo	Oslo	Oslo	Oslo
Oslo	Oslo	Oslo	Oslo	Oslo
Osnabruck	Osrhoene	Ossan	Ossetia	Ossola
Ossory	Ostend	Ostend	Ostend	Ostend
Ostia	Ostia	Ostia	Ostrach	Ostrava
Ostrava	Ostrolenka	Ostronovo	Ostrowno	Oswego
Oswestry	Oswestry	Otford	Otranto	Ottawa
Ottawa	Otterburn	Otterburn	Ottowa	Ottowa
Otumba Spain	Ouchy	Ouchy	Oudenaarde	Oudenaarde
Oudenaarde	Oudenaarde	Oudenarde	Ourique	Ourthe River
Outremer	Oviedo Spain	Owari	Owen Falls	Oxford
Oxford	Oxford	Oxford	Oxford	Oxford
Oxfordshire	Oxford	Oxus