Bangkok has the most convenient and exotic type of transport is, through the water. Boats are a great way to get around the famous Riverside area of Bangkok with its many historical attractions, temples and architecture, and to explore the 'Kalongs' (canals) for a glimpse of Bangkok from the past.
A variety of boats (express boats, river taxis and long-tail boats) run up and down through the Chao Phraya River. They connect the local suburbs towards Thonburi and along the river, while the ferries can be used to cross the river at various points. You can reach anywhere quickly by boat, bypassing the traffic on the roads.
There are 5 different varieties of express boat river taxis: No flag (local line), Blue flag line (tourist boat), Orange flag line, Yellow flag line and Green flag line. Blue Flag (Tourist Boat)