Ten thousand torches lit the moat of the Tower of London on Sunday night to commemorate the centenary of the end of the World War One.
Inaugurated with the "Last Post" sounded from one of the towers, the display entitled "Beyond the Deepening Shadow" will run for eight nights, leading up to the Armistice Day on November 11.
Every day between 5 pm and 9 pm, the Tower moat will be gradually illuminated by individual torches lit by volunteers, many of whom have a family connection to the World War One.
The Constable of the Tower of London, General Nicholas Houghton called it an "act of collective remembrance".
In 2014, the Tower of London featured the war's most enduring symbol, poppies, with an art installation called "Blood Swept Lands and Seas of Red," in which thousands of ceramic poppies flew from the medieval monument's wall into the dry moat. The artwork grew throughout the summer until 888,246 poppies were added to represent each British or colonial fatality during the war - more than double the number of Britain's casualties in World War Two.
A temporary sculpture was also installed to mark the centenary in the Canary Wharf financial district of London.
Bobbing gently in the wind, a carpet of scarlet flowers spreads across Munich's Konigsplatz square where German artist Walter Kuhn installed over 3,000 giant red silk poppies to commemorate the one hundredth anniversary of the end of World War One.
Kuhn said he was inspired by the symbol of the poppy as a flower of remembrance, worn on lapels in countries like United Kingdom, Canada, Australia and New Zealand and would like to make it an international symbol commemorating all the victims of war, both military and civilians.
The 72-year-old artist added that the choice of location was also significant, because Munich's Konigsplatz was used by Nazi dictator Adolf Hitler as a parade ground for Nazi soldiers. "This is something I wanted to take up, because for me this project is not just about the World War One, but also the World War Two and others," Kuhn said.
The red poppy was one of the plants to grow on the ravaged battlefields and between the graves of fallen soldiers.
Entitled "Never Again", the installation is set to officially open at 11 am on November 11 - marking the moment when the guns fell silent on the eleventh day of the eleventh month at the end of World War One in 1918.
The "war to end all wars" spread carnage across Europe, especially northern France and Belgium, killing 17 million soldiers and civilians in 1914-18. Over one million of the dead were soldiers from Britain and its then empire.