Olympic Green decorated with traditional drums

A security guard takes an escalator among the replicas of Chinese traditional drums which are lit by lights at night at the Olympic Green in Beijing July 23, 2008. [Agencies]

A security guard takes an escalator among the replicas of Chinese traditional drums which are lit by lights at night at the Olympic Green in Beijing July 23, 2008. [Agencies]

A security guard patrols along replicas of Chinese traditional drums which are lit by lights at night at the Olympic Green in Beijing July 23, 2008. [Agencies]

Women look at the National Olympic Stadium, also known as the Bird's Nest, which is lit by coloured lights at the Olympic Green in Beijing July 23, 2008. The sign reads, "Love the environment. Please do not play with the water".[Agencies]