Here’s a great GIF of the lights in Hong Kong’s Victoria Harbour switching off for Earth Hour 2013.

This year the campaign was supported by the likes of Eason Chan and cantopop superstar G.E.M. and the highest Earth Hour event in the world also happened on the roof top of the iconic Sky100 building!

Hear, hear.

(via taopodotorg)

The Hong Kong skyline goes dark for Earth Hour 2012. A survey released by WWF found that more than 2.8 million people took part across the city.

Lights off in Jakarta for Earth Hour 2012. Image © WWF Indonesia

London Calling

Big Ben and the British Houses of Parliament switch off for Earth Hour 2012

(Image Geoff Wilson/WWF UK)

Flickr Countdown to Earth Hour

2 days to go

Denmark

A child and WWF Panda pass the Copenhagen Wheel, Earth Hour Copenhagen, Denmark.

Confirmed landmarks participating in Earth Hour 2012

See more in our flickr set

Flickr Countdown to Earth Hour

3 days to go

Poland

Preparation for EH 2010 Warsaw, Poland © Studio69

Flickr Countdown to Earth Hour 

26 days to go

Hong Kong

Overview of Hong Kong Island and Kowloon - Earth Hour 2011

© Ringo Ma

Flickr Countdown to Earth Hour

41 days to go

United Arab Emirates

Burj Al Arab during Earth Hour Dubai, UAE on Saturday 27 March 2010. 

© Jumeirah Group

@adamsenatori has provided this exclusive image to Earth Hour as part of the aerial chapter (#theworldfromabove) of our Instagram series.

This shot was taken of the Mississippi River, looking west from Wisconsin towards the bluffs of Minnesota…The white specks in the lower left third of the frame are Tundra Swans migrating from western Canada and Alaska to the Atlantic shores New Jersey, Delaware, Virginia, North Carolina - a 3,000+ mi journey… then back again in the spring - Adam Senatori

To see more info on the urban chapter (#fromtheblock), check out our previous contribution from @serjios

@serjios has provided an exclusive image to #fromtheblock - the urban chapter of Earth Hour’s Instagram series.