IT was lights out again as Gibraltar played its role in the annual Earth Hour event.

As part of support for this event, in aid of the environment, the Gibraltar government switched off flood lights on the north face of the Rock and the Moorish Castle for the entire weekend.

In a further step all Government and Public Buildings had their external lights switched off where possible.

Worldwide, from Thailand to Tahiti, Iran to Las Vegas and even the International Space Station, individuals, companies, landmarks and iconic buildings were involved in the project.

The Sultan Ahmed Mosque (Blue Mosque) in Istanbul switched off for Earth Hour for the first time, alongside the Hagia Sophia and Bosphorous Bridge that connects Europe and Asia.

The Sydney Harbour Bridge and Opera House, Tokyo Tower, The Bird Nest in Beijing and The Petronas Towers in Kuala Lumpur all turned off the lights.

La Sagrada Familia in Barcelona, Buckingham Palace in London, Christ the Redeemer (statue) in Rio de Janeiro also had their lights turned off.