Traiskirchen is a town in the district of Baden in Lower Austria in Austria. It is 20 km south of Vienna and located in the famous Thermenlinie region of Lower Austria known for its wine and heurigers. Traiskirchen is home to the Traiskirchen Lions, a team which plays in the Austrian basketball first league. The town has the oldest public observatory in Lower Austria.
This observatory is the oldest in the state of Lower Austria and has been open to the public since 1967. It is unlike many observatories due to its location in the middle of the city and its low elevation, making it susceptible to the winter fog that plagues the region.