canal, khlong, with green trees and a grren bridge crossing in bangkok, thailand

canal cityscape cultural tourism environment khlong travel urban aquatic life bangkok tour community heritage ecological conservation ecology ecosystem environmental education green bridge trees infrastructure leisure modernization natural beauty resources outdoor activities public space recreational river scenic sustainable development traditional architecture transportation mobility planning urbanization water transport waterway grren crossing thailand term used refer man-made connected sea canals remnants old management systems built irrigation flood control purposes khlongs run city important city's