The Centennial Hall , also called the People’s Hall (Hala Ludowa), is a huge, round, 6000-seat auditorium, built in 1913 and added to Unesco’s World Heritage List in 2007. Designed by German architect Max Berg and opened to mark the centenary of Napoleon’s defeat by allied European forces in 1813, the hall is topped with a huge dome measuring 65m in diameter – a remarkable achievement in its day. The unusual 96m-high steel Spire (Iglica) in front of the entrance was built in 1948 on the occasion of the Exhibition of the Regained Territories.