Biłgoraj is a town in south-eastern Poland with 25,838 inhabitants as of December 2021. Since 1999 it has been situated in Lublin Voivodeship; it was previously located in Zamość Voivodeship (1975–1998). It is located south of Lublin and it is also the capital of Biłgoraj County. Historically, the town belongs to Lesser Poland, and is located in southeastern corner of the province, near the border with another historic land, Red Ruthenia. Biłgoraj is surrounded by a forest, with three rivers flowing through it.

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.