The city has a total area of , making it the second-largest city in Slovakia by area (after the township of Vysoké Tatry). Bratislava straddles the Danube River, along which it had developed and for centuries the chief transportation route to other areas. The river passes through the city from the west to the southeast. The Middle Danube basin begins at Devín Gate in western Bratislava. Other rivers are the Morava River, which forms the northwestern border of the city and enters the Danube at Devín, the Little Danube, and the Vydrica, which enters the Danube in the borough of Karlova Ves.