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. Due to its location between the Vistula and Oder rivers, and the watercourse of the Bydgoszcz Canal, the city forms part of a water system connected via the Noteć, Warta and Elbe with the Rhine and Rotterdam.