An ancient Angkor temple in northwestern Cambodia has reopened to the public following the completion of a decades-long renovation project described as the world's largest puzzle. The restoration of the 11th-century Baphuon monument, one of the country's largest after Angkor Wat, was celebrated with a high-profile ceremony attended by Cambodian King Norodom Sihamoni and French Prime Minister Francois Fillon. Duration: 00:43