Europe's wartorn past needs to be remembered to adequately appreciate today's peace and stability, European leaders said Sunday as they gathered in Berlin to commemorate Germany's national day of mourning, according to DPA. The fact that more than 60 years of peace followed the bloodshed of World War II is a "European miracle," said Luxembourg Prime Minister Jean-Claude Juncker, speaking in the Reichstag, which houses Germany's parliament. "Anyone who doubts in Europe or despairs for Europe should visit soldiers' cemeteries," he said. German President Horst Koehler and a host of representatives from the German legislature, political parties and religious bodies participated in the ceremony. Before the Reichstag ceremony, the heads of Germany's various government bodies laid wreaths at a memorial to victims of war and tyranny.