The Ljubljana Marsh, located south of Ljubljana, the capital of Slovenia, is the largest marsh in the country. It covers 163 square kilometres (63 sq mi) or 0.8% of the Slovene territory. It is administered by the municipalities of Borovnica, Brezovica, Ljubljana, Ig, Log-Dragomer, Škofljica and Vrhnika.

Ljubljana is the capital and largest city of Slovenia, located along a trade route between the northern Adriatic Sea and the Danube region, north of the country's largest marsh, inhabited since prehistoric times. It is the country's cultural, educational, economic, political and administrative center.