Dublin

Dublin is the capital and largest city of Ireland. The population of the Greater Dublin Area was 1,904,806 per the 2016 census. Dublin is an historical and contemporary centre for Irish education, arts and culture, administration and industry.

Kiew

Kyiv or Kiew is the capital and most populous city of Ukraine. Its population in July 2015 was 2,887,974 making Kyiv the seventh-most populous city in Europe. Kyiv is an important industrial, scientific, educational and cultural center of Eastern Europe.

Napoli

Naples is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 967,069 within the city's administrative limits as of 2017. Naples' historic city centre is the largest of its kind in Europe and has been designated as a UNESCO World Heritage Site.

Porto

Porto is the second-largest city in Portugal and one of the Iberian Peninsula's major urban areas.

Riga

Riga is the capital of Latvia and is home to 614,618 inhabitants (2021), which is a third of Latvia's population. .