Orange, New Jersey
Osnabrück
Ostend, Belgium
Oswego, New York
Ottawa, Illinois
Ottawa, Quebec, Canada
Ottenhöfen - Ottenhöfen im Schwarzwald
Oxford, England
Padua, Italy
Painted Post, NY
Palmerston North, New Zealand
Panama City
Paris, France
Paris, Illinois
Paterson, New Jersey
Pawtucket, Rhode Island
Peitermaritzburg, South Africa
Peoria, Illinois
Pera
Petoskey, MI
Philadelphia, PA
Pisa, Italy
Pistoia, Italy
Pittsburgh, PA
Plainfield, NJ
Poona, India (Pune)
Portland, Maine
Portland, OR
Poughkeepsie, New York
Pozzuoli
Prague
Prahran, Victoria, Australia
Prairie du Chien, Wisconsin
Pretoria, South Africa
Princeton, Illinois
Providence, RI
Quincy, IL
Ramla
Randolph, Massachusetts
Ravenna, Ohio
Rawalpindi, Pakistan
Reading, Pennsylvania
Richmond, Indiana
Rochester, NY
Rock Island, Illinois
Rockford, IL
Rockland, Maine
Rome, Italy
Rotorua
Rotterdam