article_snippet: Some of the world's most famous landmarks and monuments were plunged into darkness this evening to raise awareness of climate change.
article_snippet: Big Big Ben and the London Eye switched off Big Ben and the London Eye lights for Earth Hour, joining the Eiffel Tower, Brandenburg Gate in Berlin and St Basil's Cathedral in Moscow.
article_snippet: Big Ben Big Ben switched off Big Ben lights for an hour from 8.30pm to mark Earth Hour, an annual event to highlight the effects of climate change .
article_snippet: The South Bank was plunged into darkness as Earth Hour started, with the London Eye and the Houses of Parliament turning off its lights .
article_snippet: Big Ben and the Houses of Parliament Parliament blended into the night sky shortly after 8.30pm when its lights were switched off .
article_snippet: St Basil's Cathedral also went dark for an hour, starting at 8.30pm local time, to raise awareness about climate change .
highlights_snippet: Some of Britain's most iconic landmarks were plunged into darkness  to raise awareness of climate change .
  
highlights_snippet: Lights at Big Ben, Buckingham Palace, Tower Bridge and Old Trafford switched off for Earth Hour at 8.30pm .
  