London
An important settlement for two millennia, London's history goes back to its founding by the Romans. Since its settlement, London has been the centre of many important movements and phenomena throughout history such as the English Renaissance, the Industrial Revolution, and the Gothic Revival. In light of this, the city has become one of the most popular tourist destinations in the world which has increased over the years due to the city's economic growth. London boasts three World Heritage Sites, including the Palace of Westminster, the Tower of London, and the historic settlement of Greenwich. It is one of the world's leading business, financial, and cultural centres,^[11] and its influence in politics, education, entertainment, media, fashion and the arts all contribute to its status as a major global city.

London has an official population of 7,512,400 (as of mid-2006) within the boundaries of Greater London and is the most populous municipality in the European Union. The urban area of London extends beyond the limits of Greater London and has a population of 8,278,251 (as of 2001). The metropolitan area is estimated to have a population of between 12 and 14 million. London's diverse population draws from a wide range of peoples, cultures, and religions, and over 300 different languages are spoken within the city. It is an international transport hub, with five major international airports serving the area and a large port. It serves as the largest aviation hub in the world, and the multi-terminal Heathrow Airport carries more international passengers than any other airport in the world.

Hong Kong
Hong Kong consists primarily of Hong Kong Island, Lantau Island, Kowloon Peninsula and the New Territories as well as some 260 other islands. The Kowloon Peninsula is attached to the New Territories to the north, and the New Territories spans northwards eventually connecting with mainland China across the Sham Chun River (Shenzhen River). overall, Hong Kong encompasses a collection of 262 islands and peninsulas in the South China Sea. While Lantau is the largest island, Hong Kong Island is the second largest and the most populated. Ap Lei Chau is the most densely populated island in the world.

New Delhi
Much of New Delhi was planned by Edwin Lutyens, a leading 20th century British architect and it has been dubbed "Lutyens' Delhi". Lutyens laid out the central administrative area of the city as a testament to Britain's imperial pretensions. At the heart of the city was the magnificent Rashtrapati Bhawan (then known as Viceroy's House) which sat atop Raisina Hill. The Rajpath, also known as King's Way, stretched from the India Gate to the Rashtrapati Bhawan. The Secretariat which houses various ministries of the Government of India, flanked out of the Rashtrapati Bhawan. The Parliament House, designed by Herbert Baker, is located at the Sansad Marg, which runs parallel to the Rajpath.

After India gained independence in 1947, a limited autonomy was conferred to New Delhi and was administered by a Chief Commissioner appointed by the Government of India. In 1956, Delhi was converted into a union territory and eventually the Chief Commissioner was replaced by a Lieutenant Governor. The Constitution (Sixty-ninth Amendment) Act, 1991 declared the Union Territory of Delhi to be formally known as National Capital Territory of Delhi.^[2] A system of diarchy was introduced under which, the elected Government was given wide powers; except law and order which remained with the Central Government. The actual enforcement of the legislation came in 1993.