The Canals and Windmills of Holland Seventeenth-century canal ring area of Amsterdam inside the Singelgracht - Netherlands By UNESCOtravelers http://gounesco.com.s3-ap-southeast-1.amazonaws.com/wp-content/uploads/2014/05/05152552/UNESCOtravelers-Photography-UNESCO_WHS-025-1024x768.jpghttp://gounesco.com.s3-ap-southeast-1.amazonaws.com/wp-content/uploads/2014/05/05152552/UNESCOtravelers-Photography-UNESCO_WHS-025-150x150.jpgUNESCOtravelers