Delhi

Second-largest metropolis by population in India, Delhi has been continuously inhabited since at least the 6th century BCE. It is the site of many ancient and medieval monuments, archaeological sites and remains. In 1639, Mughal emperor Shahjahan built a new walled city in Delhi which served as the capital of the Mughal Empire from 1649 to 1857. A new capital city, New Delhi, was built to the south of the old city during the 1920s. When India gained independence from British rule in 1947, New Delhi was declared its capital and seat of government. Indira Gandhi International Airport is located 23 km from the city, Connected from Delhi by the Delhi Gurgaon Expressway. Low floor buses regularly run between the airport and the city. Delhi Metro link to be completed by 2010. DTC operates several buses to the airport.