Austria established its first national park in 1981, decades after most European nations. The delay stemmed from the federal structure — each of Austria's nine states controls its own land-use planning, requiring complex negotiations between state governments, private landowners, and the federal Ministry of Environment. Hohe Tauern National Park, covering 1,856 square kilometers across Salzburg, Tyrol, and Carinthia, emerged from treaties signed separately with each state between 1981 and 1992. This remains the largest protected area in the Alps and the largest national park in Central Europe. The park administration operates under a unique tripartite governance model where each state maintains its own directorate, coordinating through a joint council that meets quarterly in Matrei in Osttirol. The park's boundaries exclude all settlements and most agricultural land, creating a fragmented shape that follows elevation contours rather than natural watershed boundaries.
Hohe Tauern contains 342 peaks exceeding 3,000 meters, including Grossglockner at 3,798 meters. The park protects approximately 130 square kilometers of glacier surface, though measurements from the Austrian Academy of Sciences show this has decreased from 220 square kilometers documented in 1969. Pasterze Glacier below Grossglockner retreated 750 meters in length between 1980 and 2020, measured annually by the Zentralanstalt für Meteorologie und Geodynamik. The park contains documented populations of 10,000 Alpine ibex reintroduced between 1924 and 1975 after complete regional extinction in the 1700s. Genetic studies published in 2018 by the University of Veterinary Medicine Vienna found Austrian ibex populations descend entirely from Swiss founder animals, creating measurable genetic bottlenecks. The park hosts approximately 800,000 visitors annually according to 2019 figures, concentrated heavily on the Grossglockner High Alpine Road, a 48-kilometer toll road built between 1930 and 1935 that crosses the park at elevations up to 2,504 meters. The road operates from May to October, closing when snowfall exceeds plowing capacity.
Gesäuse National Park in northern Styria covers 110 square kilometers of limestone mountain terrain along the Enns River. Austria designated this area in 2002, making it the nation's third national park. The park protects the Gesäuse mountain range where the Enns River cuts through Triassic limestone in a gorge reaching 500 meters depth. Geological surveys identify rock formations dating to 235 million years ago, containing marine fossils from the Tethys Ocean. The park boundaries follow the high-water marks of the Enns, incorporating rapids with documented flow rates reaching 1,100 cubic meters per second during spring snowmelt. The Austrian Alpine Club maintains 14 mountain huts within park boundaries under lease agreements predating national park designation. The park recorded 62 bird species breeding within its boundaries in surveys conducted between 2015 and 2019, including golden eagles with four documented nesting pairs. The park administration employs 15 full-time rangers operating from headquarters in Admont, where Admont Abbey maintains historical documentation of land use dating to 1074.
Danube-Auen National Park protects 93 square kilometers of floodplain forest between Vienna and the Slovak border. Austria created this park in 1996 following a decade of protests against the Hainburg Dam project. In December 1984, police forcibly removed protesters occupying the intended dam site in an event termed the Hainburg Occupation, documented in parliamentary records and news archives. The government abandoned dam construction in 1985, designating the area for protection instead. The park contains the last major free-flowing section of the Danube in Austria, stretching 36 kilometers downstream from Vienna. Hydrological monitoring stations record water level fluctuations of up to 7 meters between low flow and flood conditions. The park's floodplain forests contain documented populations of 60 fish species, including critically endangered sterlet sturgeon. A 2017 population survey conducted by the University of Natural Resources and Life Sciences Vienna counted fewer than 200 individual sterlet in Austrian Danube waters. The park maintains 220 kilometers of marked trails and operates a boat shuttle service between Hainburg and Stopfenreuth during summer months.
Kalkalpen National Park in Upper Austria covers 208 square kilometers of limestone mountain terrain. Austria established this park in 1997, protecting what governmental surveys identified as the largest contiguous forest area in the Alps without settlements or through roads. The park encompasses elevations from 385 meters in the Steyrtal valley to 1,963 meters at Hoher Nock peak. Forest inventories document Norway spruce, European beech, and silver fir stands with individual trees exceeding 400 years in age, determined through core sampling. The park reintroduced Eurasian lynx between 2011 and 2017, releasing 18 animals imported from Switzerland and Slovakia. Camera trap monitoring documented successful reproduction in 2013, marking the first lynx born in Upper Austria since regional extinction around 1850. The park administration recorded 63 individual lynx through genetic sampling of scat and hair samples collected between 2018 and 2022. The park receives approximately 160,000 visitors annually, concentrated at the visitor center in Reichraming and the Bodinggraben entrance. The park maintains strict core zones totaling 75% of its area where marked trail construction is prohibited.
Neusiedler See-Seewinkel National Park protects 97 square kilometers of steppe and wetland habitat surrounding Lake Neusiedl in Burgenland. Austria established this park in 1993, simultaneously with Hungary creating Fertő-Hanság National Park on the lake's eastern shore. The combined protected area received UNESCO World Heritage designation in 2001. Lake Neusiedl covers approximately 315 square kilometers at average water levels, with maximum depth rarely exceeding 1.8 meters. The lake has no natural outlet, losing water entirely through evaporation. Water level records maintained since 1965 by the Hydrographic Service of Burgenland show fluctuations of up to 1.2 meters between wet and dry cycles. The lake completely dried in 1865 through 1870, documented in cadastral records and contemporary accounts. The Seewinkel region east of the lake contains approximately 40 saline pans formed in shallow depressions. These pans host documented populations of 300 bird species, with ornithological surveys recording 130 species breeding within park boundaries. The park provides critical habitat for great white egrets, with the Austrian Ornithological Society counting 350 breeding pairs in 2021. Greylag goose populations exceed 15,000 individuals during autumn migration, peaking in late October based on standardized counts conducted since 1982.
Donau-Auen National Park operates a 90-hectare enclosure containing European bison reintroduced in 2020. The park received four animals from breeding programs in Poland and Germany, establishing Austria's first free-roaming bison population since extinction in the 1500s. Genetic analysis confirms these animals descend from the Białowieża Forest lineage, the only surviving wild population discovered in 1919. The enclosure allows acclimatization before planned release into designated rewilding zones totaling 500 hectares. The park's riparian forests contain black poplars with trunk diameters exceeding 2 meters, measured in inventories conducted in 2015. These trees represent remnant populations of wild black poplar, genetically distinct from cultivated hybrids according to DNA analysis by the Austrian Federal Forests research station. The park contains 65 kilometers of side channels separated from the main Danube flow, providing spawning habitat for pike, carp, and catfish. Fisheries biologists documented individual catfish exceeding 2 meters length during electrofishing surveys in 2019.