Er is één plaats met de naam Observatory Island in Australië.
Alle plaatsen in de wereld die "Observatory Island" heten.
Hamilton (5)
Kingston (5)
Gladstone (5)
Springfield (4)
Woodstock (4)
Darlington (4)
Rosedale (4)
Richmond (4)
Gordon (4)
Windsor (4)
Newstead (4)
Cremorne (4)
Mangalore (3)
Scarborough (3)
Southern Cross (3)
Apsley (3)
Waratah (3)
Belmont (3)
Campbelltown (3)
Killarney (3)
Lilydale (3)
Raglan (3)
Sunnyside (3)
Woodford (3)
Fitzroy (3)
Hampton (3)
Longford (3)
Saint Helens (3)
Stanley (3)
Denison (3)