Final preparations to mark the 20th anniversary of the fall of the Berlin wall are being put in place in the German capital.The giant party, which has been dubbed the ‘Festival of Freedom’, will take place at the Brandenbourg Gate on Monday. World leaders, including Gordon Brown, Nicolas Sarkozy, Dmitri Medvedev and Hillary Clinton will all join Germany’s Chancellor Angela Merkel for the big event. Around 100,000 spectators are also expected to watch the big show and many of Berlin’s hotels have already reportedly been booked out. One of the star attractions is a giant 1000 domino chain that has been built to follow the path of the former barrier. Like the real wall 20 years ago it too will fall, culminating with a spectacular firework display to symbolise the re-unification of Germany and the end of the Cold War.