Bílina is a town in Teplice District in the Ústí nad Labem Region of the Czech Republic. It has about 15,000 inhabitants. It is known for its spas and as a source of the strongly mineralized water, Bílinská kyselka. The historic town centre is well preserved and is protected by law as an urban monument zone.

The Most Basin is a structural basin and geomorphological mesoregion of the Czech Republic. It is named after the city of Most. It forms the southwestern and central parts of the Ústí nad Labem Region. It is among the richest European deposits of lignite, which has been extracted here since the second half of 19th century, mostly by extensive surface mining.