BRITAIN-WWI-HISTORY-CENTENARY-CULTURE-EXHIBITION

A Yeomen Warder stands by as British Prime Minister David Cameron plants a poppy in the "Blood Swept Lands and Seas of Red" installation by ceramic artist Paul Cummins and theatre stage designer Tom Piper, marking the centenary of the outbreak of the First World War, in the moat at the Tower of London on November 8, 2014. Designed as a tribute to Britain's World War I dead, a blood-red trench of ceramic poppies around the Tower of London has become a national phenomenon as Britons flock to remember the fallen in generations of war. Up to four million people -- six percent of the country's population -- are expected to have visited "Blood Swept Lands And Seas Of Red" before the last flower is planted on November 11, the anniversary of the end of World War I. AFP PHOTO / POOL / STEFAN ROUSSEAU -- RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION (Photo credit should read STEFAN ROUSSEAU/AFP via Getty Images)