Delhi is a city that bridges two different worlds. Old Delhi, once the capital of Islamic India, is a labyrinth of narrow lanes lined with crumbling havelis and formidable mosques. In contrast, the imperial city of New Delhi created by the British Raj is composed of spacious, tree-lined avenues and imposing government buildings. Delhi has been the seat of power for several rulers and many empires for about a millennium. Many a times the city was built, destroyed and then rebuilt here. Interestingly, a number of Delhi’s rulers played a dual role, first as destroyers and then as creators.