Those who fear that the city's historical buildings are in danger of being literally overshadowed by modern monoliths might take comfort in the global economic crisis, which has caused some of Moscow's most ambitious new developments, including Norman Foster's 600 meter-high Russia Tower and 450 meter Crystal Island building, to be put on hold.

CNN: Gold and glitz in the 'New Moscow'

She will use a diamond made from crystal glass, which has been on display at the Tower of London from the beginning of May, to light the flame.

CNN: Eyes of world on spectacular Thames royal pageant