Massive colorful dominoes painted by German students, marking the 20th anniversary of the fall of the Berlin Wall on November 9 1989, a 1.5-km long segment of the Wall will stand for two days along its original route in front of the Brandenburg Gate to the Potsdamer Platz. The row of 1,000 20-kg dominos standing 1.5 metres apart painted in bright colours by school children and rising 2.5 metres high will be toppled at the end of a gala ceremony as a symbolic tribute to the collapse of the Wall 20 years earlier.BERLIN - GERMANY 09/11/2009.