Cities at a border. Data from OpenStreetMaps, buildings coloured by country.
Baarle-Hertog (Belgium) / Baarle-Nassau (Netherlands)
El Paso (USA) / Ciudad Juarez (Mexico)
Brazzaville (Republic of the Congo) / Kinshasa (Democratic Republic of the Congo)
Niagara Falls (Canada) / Niagara Falls (USA)
Rome (Italy) / Vatican City
