Hala Ludowa (The Centennial Hall) is one of the thirteen historical monuments of Poland registered on the UNESCO World Heritage List. This monumental 20th century reinforced concrete structure designed by Max Berg, major architect of the city, has been on the UNESCO List since July 13th, 2006. With its enormous central space and the dome (23 m high), the Centennial Hall is a landmark in the history of architecture. It was erected to host the World Exhibition of 1913 held to commemorate the hundredth anniversary of the battle at Leipzig. Nowadays the Centennial Hall is a multi-purpose recreational building.