Earth Hour: Iconic global landmarks turn off lights

France's Eiffel Tower and Barcelona's Sagrada Família Basilica were among the famous global landmarks that went dark for an hour on Saturday night.

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The global event, organised by the World Wide Fund for Nature, takes place every year to raise environmental awareness.

It aims to encourage people to turn off their lights for 60 minutes and the event first started in Sydney, Australia, in 2007.

Video journalist: Emaan Warraich

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