Shanghai is the largest Chinese city by population and the largest city proper by population in the world with a population of more than 14 million as of 2014. For centuries a major administrative, shipping, and trading town, Shanghai grew in importance in the 19th century due to European recognition of its favorable port location and economic potential. Shanghai is a popular tourist destination renowned for its historical landmarks such as The Bund, City God Temple and Yu Garden as well as the extensive Lujiazui skyline, many skyscrapers, and major museums including the Shanghai Museum and the China Art Museum. It has been described as the "showpiece" of the booming economy of mainland China. Winters are chilly and damp, and cold north-westerly winds from Siberia can cause nighttime temperatures to drop below freezing, summers are hot and humid, with an average of 8.7 days exceeding 35 °C (95 °F) annually; occasional downpours or freak thunderstorms can be expected. The most pleasant seasons are spring, although changeable and often rainy, and autumn, which is generally sunny and dry.