Culture in Dresden and are connected by the "Blue Wonder" Elbe bridge. This bridge is one of the oldest cantilever truss bridges in Germany. It is often said to be called a Wonder because it spans the river without a pillar or due to its colour, which is sometimes said to have changed from green to blue. Nearby, two cable railways connect Körnerplatz with two villa quarters. The Standseilbahn Dresden is a funicular railway which travels up 95 metres and connects the districts of Loschwitz and Weißer Hirsch. The Schwebebahn Dresden is the oldest suspension railway in the world and connects the lower
Dresden Photomasks. Their factories attract many suppliers of material and cleanroom technology enterprises to Dresden. The pharmaceutical sector developed at the end of the 19th century. The 'Sächsisches Serumwerk Dresden' (Saxon Serum Plant, Dresden), owned by GlaxoSmithKline, is a global leader in vaccine production. Another traditional pharmaceuticals producer is Arzneimittelwerke Dresden (Pharmaceutical Works, Dresden). A third traditional branch is that of mechanical and electrical engineering. Major employers are the Volkswagen Transparent Factory, EADS Elbe Flugzeugwerke (Elbe Aircraft Works), Siemens and Linde-KCA-Dresden. The tourism industry enjoys high revenue and supports many employees. There are around one hundred bigger hotels in Dresden, many