direct vicinity. Bus lines connect the town and Südbahn with the surrounding areas. The Südbahn connects Mödling to Vienna, but also to other local centers like Wiener Neustadt by commuter trains. Many bus lines end/start at Mödling's railway station: Most of them lead to Vienna (with different ways) (207, 259, 260, 265, 266, 269, 270...) but also other villages in the district are destinations: Gießhübel (262), Hinterbrühl, Gaaden... (364, 365), Guntramsdorf (363) and many more. The closest airport is Vienna International Airport. The town lies close to several major motorways (A2, A23, S1). Until the 1960s, the town was connected to the tram system of Vienna though the line 360 was discontinued after the commuter train system was introduced on the Südbahn. Historically Mödling was the site of the first electrified tram line, which had mainly touristic use. Economy In the old days, because of the rail-connection to the north/Vienna and to the south, several large industries had their plants here. Today most of the firms are SMEs. The larger ones have moved to Wiener Neudorf into the 'Industriezentrum Niederösterreich Süd'. Castles The Mödling area in the Vienna Forest contains many old castles () and ruins. Castle Liechtenstein is the most famous and biggest castle. It was owned by the wealthy family who later founded the country of the same name. Burgruine Mödling also stands nearby and is one of the oldest ruins in the area. It dates back to the 11th century. In addition, Black Tower (Schwarzer Turm) looks out over downtown Mödling from the Calendar mountains. It was built over 200 years ago, but is still privately occupied to this day. Lastly, on the walk between Black Tower and Castle Liechtenstein, one will come across a 200-year-old amphitheatre nearly buried in the woods. It was built in the same time frame as the Black Tower and served as an important cultural centre for the local Mödling population. Culture and sights The well-preserved and revitalized Old City is protected by the Hague Convention. The town hall holds the registry office. Because of its lovely environment many couples choose to marry here. Schrannenplatz and Kaiserin-Elisabeth-Strasse were pedestrianised at the very early date of 1976, the first time a 'Bundesstraße' had been declared a pedestrian area. Nearby is the Eichkogel Nature Reserve, with rare flora, like 'Knollen-Brandkraut' (Phlomoides tuberosa) and others, on 'Halbtrockenrasen'. Among the rocks in the Klausen rare plants