Graz Airport camp, run by the governments of Franz Joseph I of Austria and Charles I of Austria. The first domestic passenger flight in Austria in 1925 serviced the route Vienna–Graz–Klagenfurt. In 1930 Yugoslav flag-carrier Aeroput introduced regular flights linking Yugoslav capital Belgrade with Vienna with stops in Zagreb and Graz. In 1937, the construction of a terminal building began due to increase in the number of passengers. After the end of the Second World War, however, Austria was forbidden to possess an aviation fleet, neither military nor civil. After reopening of Austrian airspace in 1951, a new concrete runway of was
Graz it remains influential to this day. In 1999, Graz was added to the UNESCO list of World Heritage Sites, and the site was extended in 2010 with Eggenberg Palace (German: Schloss Eggenberg). Graz was the sole Cultural Capital of Europe of 2003 and became a City of Culinary Delights in 2008. The name of the city, Graz, formerly spelled Gratz, most likely stems from the Slavic "gradec", "small castle". Some archaeological finds point to the erection of a small castle by Alpine Slavic people, which over time became a heavily defended fortification. In literary Slovene, "gradec" still means "small castle",