The Custom House on the Bund celebrated its 90th anniversary on Saturday by inviting visitors to explore one of the symbols of Shanghai. /VCG Photo

Built in 1927, the eight-story building cost 4.3 million taels of silver and is topped by a clock tower, which is 90 meters tall. The bells and the clock were built in England according to the design of Big Ben before they were shipped to Shanghai. The clock is the largest in Asia. /VCG Photo

Wei Yunsi, 58, is the sole maintainer of the bell. He inspects it every day. "The building has undergone numerous hardships and historic events, but I think it is still full of vigor, solid as rocks," said Wei. /VCG Photo