Seeland (lit.: Lakeland, also German: Drei-Seen-Land, French: Pays des trois lacs) is a region in Switzerland, at the south-eastern foot of the mountain range of the Jura Mountains containing the 3 Lakes of Morat, Neuchâtel, and Bienne (Biel). In previous eras, it was the floodplain of the Aare and was thus swampy. After the huge hydrological works Jura water correction, the area drained out and could support more cultivation. Seeland is one of the most important regions in Switzerland for growing vegetables, particularly in the Grand Marais (lit.: Large Marshland, German: Grosses Moos).
The region is at the boundary of the cantons of Bern, Fribourg, Neuchâtel, and Vaud, forming part of the linguistic boundary region between French- and German-speaking Switzerland.
The Bernese Seeland is one of five administrative divisions (regions) in the canton of Bern with a population of 76,052 (as of 2020)[1] in 46 municipalities.