Cities or Towns that Arose Next To Each Other Across a Boundary Line

The Top Ten

1 Detroit - Windsor (US - Canada)

2 Como - Chiasso (Italy - Switzerland)

3 Niagara Falls - Niagara Falls (US - Canada)

4 Philadelphia - Camden (Pennsylvania - New Jersey)

5 Sault Ste. Marie - Sault Ste. Marie (US - Canada)

6 Giurgiu - Ruse (Romania - Bulgaria)

7 Jaigaon - Phuntsholing (India - Bhutan)

8 Blagoveshchensk - Heihe (Russia - China)

9 Astara - Astara (Azerbaijan - Iran)

10 Union City - Union City (Indiana - Ohio)

The Contenders

11 El Paso - Ciudad Juárez (US - Mexico)

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