CAIRO, March 25 (MENA) - The Environment Ministry organised a ceremony in Cairo Tower on Saturday evening marking the Earth Hour in which lights are switched off to spotlight climate change. The event was attended by Environment Minister Khaled Fahmi and a host of his ministry's senior officials along with a number of public figures. Egypt participated in the event by switching off the lights at a number of touristic landmarks including the Pyramids, Sphinx, Cairo Tower, Bibliotheca Alexandrina and Citadel of Qaitbay along with some temples in Luxor and a number of hotels. The darkness lasted for an hour, from 8:30 pm to 9:30 pm, to mark Earth Hour, an annual event intended to shed light on climate change. Fahmi said that participating in the event aims at assuring Egypt's solidarity with the rest of the world in face of climate and international changes. Egypt started to take part in the event in 2009 joining 88 countries to raise awareness about protecting the Earth from the negative effects of global warming and climate change, he said.