How to Get There : Get off the SkyTrain at Saphan Taksin Station (S6) and take Exit No. 2, then board the Chao Phraya Express Boat from Sathorn Pier to Wang Lang Pier (Siriraj Pier).
BTS + Boat: Get off the skytrain (BTS) at Saphan Taksin station and take Chao Phraya Express Boat to Tha Maharaj. Only the boat with blue flag (or tourist boat) will come directly to Tha Maharaj. So, if you come with other boats, you have 2 choices: