Kaliningrad, Kaliningrad, Russia
Amsterdam, North Holland, Netherlands
Greifswald, Mecklenburg-Vorpommern, Germany
Hamburg, Hamburg, Germany
Lisbon, Lisbon, Portugal
Queretaro, Queretaro, Mexico
Philadelphia, Pennsylvania, United States
Istanbul, Istanbul, Turkey
Sintra, Lisbon, Portugal
London, London, England
Columbia, MO, USA