This year marks the 100th anniversary of the start of 
World War I
 in 1914. On this year's Armistice Day in London, a massive work of art 
dedicated to commonwealth servicemen and women lost a century ago 
reached its conclusion. The evolving installation, titled "Blood Swept 
Lands and Seas of Red", began back on July 17, with the placing of a 
single ceramic poppy in the moat of the Tower of London. In the months 
since, another 888,245 poppies were added, each representing a military 
fatality from World War I. The poppies were arranged to appear as a 
flowing sea of blood pouring from the Tower's "Weeping Window". More 
than four million visitors have already viewed the installation, which 
will start to come down soon. 
[16 photos]