Bad Deutsch-Altenburg

The Occupation of the Hainburger Au wetlands in December 1984 marked a turning point for environmental awareness in German speaking central Europe and was of great significance for the development of democratic processes in Austria. The Hainburger Au is a large naturally occurring flood plain bordering the River Danube at, and upstream of, Hainburg in Lower Austria. It is a short distance to the east of Vienna's main airport. Since 1996 it has been part of the Danube-Auen National Park. In February 1983, the Austrian branch of the World Wide Fund for Nature (WWF) began a campaign under the slogan "Rettet die Auen" to preserve the Hainburger Au flood plain. With the help of various media channels the WWF began to publicise the threat of impending destruction for a large part of the region. The threat came from plans, which at the end of 1984 still enjoyed the full support of the Austrian government, to construct a hydro-electric power plant. As events unfolded, the nature of the protesters' demonstrations and a mass-occupation of the threatened area changed peoples' understanding of democracy as well as national energy policy in Austria.

Donau-Auen National Park (German: Nationalpark Donau-Auen) covers 93 square kilometres in Vienna and Lower Austria and is one of the largest remaining floodplains of the Danube in Middle Europe. The German word Aue (variant Au) means "river island, wetland, floodplain, riparian woodland", i.e. a cultivated landscape in a riparian zone. The words Aue and Au occur in a large number of German place names—including Donau, the German word for the Danube River—and refer to forests, meadows, and wetlands in river and stream lowlands and floodplains. The Danube-Auen National Park protects a large area of lowland forests, meadows, wetlands, and other riparian habitat along the Danube just downstream of Vienna. The Park was designated an IUCN category II national park and spans the areas of Vienna (Lobau), Groß-Enzersdorf, Orth an der Donau, Eckartsau, Engelhartstetten, Hainburg, Bad Deutsch-Altenburg, Petronell-Carnuntum, Regelsbrunn, Haslau-Maria Ellend, Fischamend and Schwechat.

Carnuntum (from Ancient Greek Καρνοῦς (Carnous) according to Ptolemy) was a Roman legionary fortress (Latin: castra legionis) and headquarters of the Pannonian fleet from 50 AD. After the 1st century, it was capital of the Pannonia Superior province. It also became a large city of approximately 50,000 inhabitants.Its impressive remains are situated on the Danube in Lower Austria halfway between Vienna and Bratislava in the Carnuntum Archaeological Park extending over an area of 10 km2 near today's villages of Petronell-Carnuntum and Bad Deutsch-Altenburg.

Hundsheimer Berg is a nature reserve in the Austrian municipalities of Hundsheim and Hainburg an der Donau in the province of Lower Austria located on the slopes of the Hundsheimer Berg. Half of the reserve is owned by WWF Austria with the other half being owned by the municipality of Hundsheim. The Hundsheimer Berg is for example used for excursions by the University of Vienna.

Spitzerberg is a nature reserve in the Austrian municipality of Prellenkirchen in the province of Lower Austria. It forms one of the biggest nature reserves of Lower Austria and is located on the Spitzerberg, the southern extension of the Hundsheimer Berge. The nature reserve has an IUCN category IV protection level and is part of the Natura 2000 area Hundsheimer Berge. The area is covered by rock steppes, dry and half dry grasslands and dry forests. The steep slopes of the Spitzerberg consist of limestone and dolomite. In combination with the very thin humus layer, this creates an extremely dry environment. From 2004 till 2008 the Spitzerberg nature reserve was part of the LIFE-Nature-project Pannonische Steppen- und Trockenrasen.

Hundsheimer Berg is a hill located in the Hundsheimer Berge hill range in Lower Austria, Austria close to the border with Slovakia. Its peak is 481 metres (1,578 ft) above sea level which makes it the highest hill in the Hundsheimer Berge. The north slopes of the Hundsheimer Berg are covered with forests while the southern slopes have a steppe vegetation. Since 1965, a nature reserve with the same name, Hundsheimer Berg, is located on these southern slopes.

Hainburg an der Donau (also referred to simply as Hainburg) is a town located in the Bruck an der Leitha district in the state of Lower Austria of eastern Austria. In 2021 it had a population of about 7,000.

Spitzerberg Airport (German: Flugplatz Spitzerberg, ICAO: LOAS) is a private use airport in Hundsheim, Lower Austria, Austria. The airport is located at the foot of the Spitzerberg. Part of the runway is included in the Spitzerberg nature reserve.

Hundsheim is a town in the district of Bruck an der Leitha in Lower Austria, in northeast Austria.

Petronell-Carnuntum is a community of Bruck an der Leitha in Austria. It is known for its annual World Theatre Festival.

Engelhartstetten is a town in the district of Gänserndorf in the Austrian state of Lower Austria.

The Heidentor, also known as Heathens' Gate or Pagans' Gate, is the partially reconstructed ruin of a triumphal arch of the Roman Empire, located in what was the fort-city of Carnuntum, in present-day Austria. Originally tetrapylon in form, only one of its four arches remains.