Triglav National Park is the only national park in Slovenia. It was established in its modern form in 1981 and is located in the northwestern part of the country, respectively the southeastern part of the Alpine massif. Mount Triglav, the highest peak of the Julian Alps, stands almost in the middle of the national park. From there the valleys spread out radially, supplying water to two large river systems with their sources in the Julian Alps: the Soča and the Sava, flowing to the Adriatic and Black Sea, respectively.

Triglav, with an elevation of 2,863.65 metres (9,395.2 ft), is the highest mountain in Slovenia and the highest peak of the Julian Alps. The mountain is the pre-eminent symbol of the Slovene nation, appearing on the coat of arms and flag of Slovenia. It is the centrepiece of Triglav National Park, Slovenia's only national park. Triglav was also the highest peak in Yugoslavia before Slovenia's independence in 1991.