People residing in different parts of India often plan for travelling to Calcutta for several reasons whether it is for business purpose or just for traveling. Flights to Calcutta are available at frequent intervals from major cities of India. People usually travel to Calcutta at the time of Durga puja which is the main festival celebrated with great pomp and show in Kolkatta and other eastern parts of India. People often visit Calcutta to admire the beauty of the city which is clearly depicted through historic monuments, Ganga sagar and most important one i.e.howrah bridge which is built at the time of British Rule.