On this page about Bydgoszcz-Toruń:
Bydgoszcz-Toruń (Polish: aglomeracja bydgosko-toruńska) is the name of the bi-polar agglomeration in the middle of the Vistula river created by 2 cities: Bydgoszcz and Toruń. The distance between the built-up areas of the cities is about 30 km. They are the administrative capitals and economic center of Kuyavian-Pomeranian Voivodship.