Austria chose the building of the Vienna Secession for its 50-cent coin. It was built by Joseph Maria Olbrich in the late 19th century. The Secession Building is now the oldest exhibition space in Vienna that is dedicated specifically to contemporary 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.