The 20-cent coin features Vienna’s Belvedere Palace. The palace complex was built by the Baroque architect Johann Lucas von Hildebrandt as a summer residence for Prince Eugene. The site includes the Upper and Lower Belvedere, orangery, palace stables and vast gardens. The palace is considered one of the finest Baroque constructions in Europe and has been designated a UNESCO World Heritage Site. Today, the Belvedere houses a lavish collection of Austrian art.
Euro coins and banknotes were introduced on 1 January 2002 in twelve countries. Today, the euro area has grown to include 18 countries. Euro coins feature a common design on one side. Also, the national side (reverse) of every coin includes a ring of 12 stars from the European Union flag. Each country has its own design for the national side of its coins.