Delhi is a city to overwhelm the senses – from the cows roaming the streets to the colourful spices piled high on street stalls, to the beauty of the Hindu temples and the mosques from which evening prayers are heard throughout the city. As one of Asia's fastest-growing cities, Delhi has both cultural diversity and chaotic traffic and pollution. Don't miss seeing a cricket game, the Red Fort and Gandhi's final resting place. Best time to go: November to March, to avoid the intense heat.