Former Soviet Union President Mikhail Gorbachev and Berlin Mayor Klaus Wowereit (R) smile following a news conference in the Berlin City Hall November 9, 2009. As the highlight of a 5-million euro ($7.4 million) celebration marking the 20th anniversary of the fall of the Berlin Wall on November 9, a 1.5-km (one-mile) 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 meters apart -- painted in bright colors by school children and rising 2.5 meters high -- will be toppled at the end of a gala ceremony as a symbolic tribute to the collapse of the Wall 20 years earlier. Reuters Pictures logo Reuters Pictures 27 months ago

Former Soviet Union President Mikhail Gorbachev and Berlin Mayor Klaus Wowereit (R) smile following a news conference in the Berlin City Hall November 9, 2009. As the highlight of a 5-million euro ($7.4 million) celebration marking the 20th anniversary of the fall of the Berlin Wall on November 9, a 1.5-km (one-mile) 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 meters apart -- painted in bright colors by school children and rising 2.5 meters high -- will be toppled at the end of a gala ceremony as a symbolic tribute to the collapse of the Wall 20 years earlier.