The conservation of the natural environment in Slovenia goes back to the late nineteenth century. The first nature protection program in Slovenia was drawn up in 1920. The current Nature Conservation Act was adopted in 1999. Today there are one national park, three regional parks, and twenty-three landscape parks in the Slovenian mountains; this chapter presents one example of each. The beginnings of Slovenia’s only national park (i.e., Triglav National Park) hark back to 1924. It is rich in typical alpine features and full of alpine flora and fauna. Its cultural landscape reflects the connection between people and nature. It covers 840 km2 and contains thirty-three settlements with over 2,300 residents. Logar Valley Landscape Park was established in 1987. It covers 24 km2 and has only around forty residents. The beauty of this glacial valley is reflected in numerous natural features. Farms, which have shaped the cultural landscape over the centuries, have also left their mark. Efforts to preserve the predominantly forested Pohorje Hills region date back to the 1920s. Pohorje Regional Park was established in 2024. It covers 59 km2 and has no residents.