PowerPoint Show by Andrew

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.

The first of hundreds of thousands. On July 17, 2014, Crawford Butler, the longest serving Yeoman Warder at the Tower of London, with the first ceramic poppy to be planted in the dry moat of the tower in London.

Each of the 888,246 ceramic poppies represents an allied victim of the First World War.

Chelsea Pensioner Albert Willis plants a ceramic poppy amongst other poppies, at the Tower of London on October 9, 2014.

Red ceramic poppies that form part of the art installation at the Tower of London, viewed from the top of the Shard on October 27, 2014.

People take pictures of "Blood Swept Lands and Seas of Red" after its official unveiling in the dry moat of the Tower of London on August 5, 2014.

Volunteers plant ceramic poppies for the art installation at the Tower of London on September 20, 2014.

Ceramic poppies covered in rainwater on October 16, 2014.

A photograph of Corporal Thomas William Belton who died in Belgium in World War One at the age of 25, is placed on railings surrounding the installation on November 9, 2014.

Britain's Queen Elizabeth II walks through a field of ceramic poppies at The Tower of London on October 16, 2014.

"Seas of Red", illuminated at night, on November 9, 2014.

Visitors view "Blood Swept Lands and Seas of Red" on October 30, 2014.

Large crowds view a sea of ceramic poppies on November 2, 2014.