Earth hour around the world

KLCC, Kuala Lumpur

Beijing's National Grand

Acropolis, Athens

Berlin's Brandenburg Gate

Tokyo Tower

Cathedral, Lausanne

Sydney Harbour

Shanghai

Romania's Parliament building

India Gate

Mumbai

Giza pyramids and the Sphinx, Cairo

Herodion theatre, Athens

National Aquatics Center "Water Cube" Beijing

Taipei

The Sydney Opera House

The Sydney Harbour Bridge

Hong Kong

Jakarta, Indonesia

Singapore