Divided city

A divided city is one which, as a consequence of political changes or border shifts, currently constitutes (or once constituted) two separate entities, or an urban area with a border running through it. Listed below are the localities and the state they belonged to at the time of division.

Divided cities include:

Historically, the Polish Tricity, Gdynia (a city built to become a port of the Second Polish Republic) and its neighbours Gdańsk and Sopot, overlapped two borders:

Notes:

References:

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Wikipedia