The bustling city of Hong Kong was just a collection of fishing villages when claimed by Britain in 1842 following the First Opium War with China. This failed attempt by the Ching Dynasty to stop the British trading in opium led to Hong Kong being ceded to Britain under the Treaty of Nanking that year. The Kowloon Peninsula was handed over in 1860 and a 99-year lease on the New Territories, comprising the area north of Kowloon up to the Shenzhen River plus 235 outlying islands, was granted in 1898. Under the unique principle of 'One Country, Two Systems', Hong Kong returned to Chinese sovereignty on 1 July 1997 as a Special Administrative Region of the People's Republic of China. This arrangement allows Hong Kong to enjoy a high degree of autonomy, retaining its capitalist system, independent judiciary and rule of law, free trade and freedom of speech. Hong Kong's magnificent harbour has been the key to its development as a trading port and entrepôt for China, progressing through an industrial era to become a leading financial and services centre in Asia. The unique blend of eastern and western influences, matched by diverse attractions and stunning countryside, has also made Hong Kong Asia's prime tourist destination.