Hangzhou, also romanized as Hangchow, is the capital and most populous city of Zhejiang, People's Republic of China. It sits at the head of Hangzhou Bay, which separates Shanghai and Ningbo. Hangzhou grew to prominence as the southern terminus of the Grand Canal and has been one of China's most renowned and prosperous cities for much of the last millennium. Its West Lake, a UNESCO World Heritage site immediately west of the city, is among its best-known attractions. A study conducted by PwC and China Development Research Foundation ranked Hangzhou first among "Chinese Cities of Opportunity". According to GaWC, it is a World City with a "Beta" classification, together with Chongqing, Nanjing and Tianjin in China. It is also one of the world's top 100 financial centers, according to the Global Financial Centres Index.