Bydgoszcz ( , , ; ) is a city in northern Poland, straddling the meeting of the River Vistula with its left-bank tributary, the Brda. With a city population of 339,053 as of December 2021 and an urban agglomeration with more than 470,000 inhabitants, Bydgoszcz is the eighth-largest city in Poland. It is the seat of Bydgoszcz County and the co-capital, with Toruń, of the Kuyavian-Pomeranian Voivodeship. The city is part of the Bydgoszcz–Toruń metropolitan area, which totals over 850,000 inhabitants. Bydgoszcz is the seat of Casimir the Great University, University of Technology and Life Sciences and a conservatory, as well as the Medical College of Nicolaus Copernicus University in Toruń. It also hosts the Pomeranian Philharmonic concert hall, the Opera Nova opera house, and Bydgoszcz Airport. Being between the Vistula and Oder (Odra in Polish) rivers, and by the Bydgoszcz Canal, the city is connected via the Noteć, Warta, Elbe and German canals with the Rhine, a river linked to the Mediterranean and Black Seas by canals and flowing into the North Sea. Bydgoszcz is an architecturally rich city, with gothic, neo-gothic, neo-baroque, neoclassicist, modernist and Art Nouveau styles present, for which it has earned the nickname of Little Berlin. The notable granaries on Mill Island and along the riverside belong to one of the most recognized timber-framed landmarks in Poland. Etymology Bydgoszcz, originally Bydgoszcza (feminine), is a pronoun name the second part of which – 'goszcz' comes from 'gost-jь' possibly or 'gost-ja' an old Slavic root which refers to an urban or suburban trading settlement. There are also a number of other Polish place-names which make use of the 'goszcz' suffix: i.e. Małogoszcz and Skorogoszcz. Bydgoszcz, however, has a long, rich history of etymological change: in 1239 known as Bidgosciam, in 1242 as castrum quod Budegosta vulgariter nuncupatur (castle, which is colloquially called Bydgoszcza), in 1279 as Bidgoscha, since 1558 as Bydgoszcz, that is, until the 16th century, and as Bydgoszcza "fishing village or campsite belonging to Bydgosta". The name 'Byd-gost' contains archaic elements of the Proto-Slavonic root 'byd' which existed as a variant of the verb 'to raise' (Ancient Russian 'vъzbydati' = stimulating, Proto-Slavonic 'bъděti' / 'bъd 'ǫ' = no sleep, to watch), and the common Slavic root 'Goszcz' (fireplace). Some people identify the name of the town as 'Budorgis', a name from the second century which is listed as being next to the village Calisia on