Kolkata is the capital of West Bengal and is located on the Hugli River. It was formerly known as Calcutta and is a major port connected to the sea through the Hugli River. Notable bridges over the Hugli include Howrah Bridge, now called Rabindra Setu, and Vidyasagar Setu. Kolkata has a mild climate and is an important industrial center known for jute, silk, rice, paper and chemicals production. Places of interest include Victoria Memorial, Belur Math, and Alipur Zoo. Transportation includes the metro, trains, trams, buses and other vehicles.