Lights at tourist attractions such as the Grand Palace Temple of Dawn, Golden Mount Temple, the Bangkok Metropolitan Giant Swing and the Rama 8 bridge
went out for one hour at 8:30 PM local time as part of a campaign to encourage people to save energy and tackle man-made carbon dioxide emissions linked to a warming planet
Earth Hour, a worldwide movement organised by the WWF, encourages individuals, communities and businesses to turn off non-essential lights for an hour on the last Saturday of March, in a symbolic commitment to tackle climate change