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Photo: C.Stadler/Bwag, CC BY-SA 4.0 via Wikimedia Commons
The hill has a beautiful view over the Viennese vineyards and down the Danube. On clear days one clearly sees the Viennese historic center including the cathedral. Many bike or hike trails into the Wienerwald start from here.
The Kahlenberg is a hill located in the 19th District of Vienna, Austria (Döbling).
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Kirche am Leopoldsberg / Leopoldikapelln
Dedicated to the patron saint of Vienna, this small church was established in 1679, and its current appearance dates to the first part of the 18th century. The building is on top of 425-m-high Leopoldsberg, with lovely views of Vienna and the surrounding area. Following restoration work of the nearby medieval fortress, the church re-opened to the public in 2018.
Grinzinger Pfarrkirche
Built in the 15th century, the church was burned in 1529 and 1683, during the first and second Turkish sieges of Vienna, and severely damaged during World War II. However one treasure did survive: the organ, on which both Beethoven and Schubert used to perform. The organ was modified several times since then and had fallen into severe disrepair, but in 1997 it was completely restored by a master organ builder and is now again played regularly.
Haus des Heiligenstädter Testaments / Beethoven House
One of Beethoven's many residences within the city. While living here he composed his Symphony No. 2 in D major (Op. 36), as well as several other works.
The indoor pool is 25 m long, and in summer the outdoor area offers a nice view over Vienna. The temperature of the pool varies according the week.
With 542 m above sea level, it is the highest point of Vienna. The Habsburgerwarte, a 27-m-tall tower from 1888, on top of the Hermanskogel is open on weekends in the summer. It used to be km 0 for cartographic measurements in the Austria-Hungarian empire.
Built between 1927 and 1930 by the Otto Wagner's student Karl Ehn, the Karl Marx-Hof is a public housing complex (called "Gemeindebau" in Vienna), from the time of the social-democratic public housing programme during Austria's First Republic. With its 1382 Apartments and roughly 1,1 km in length, Marx-Hof is the world's longest contiguous public housing complex and probably Vienna's most famous "Gemeindebau". The permanent exhibit Red Vienna (in Wash House #2) is devoted to the history of Red Vienna, a period of one-party rule by the Social Democrats from 1919-1934. The non-exhibit parts of the building are still used as housing, so please respect the residents' privacy. Guided tours (German only) are offered on Sundays at 13:00, with no reservations required.