This is 1st class of royal temple locate in Thonburi area (Thonburi is previous capital before Bangkok). This temple is very beautiful which decorated with Thai & Chinese Arts. We can say that this is like HIDDEN GEM! listing in Bangkok which come to visit and this is NOT touristy area.
If you want to go this place, you can show this Thai sentence to the driver. ต้องการไปวัดราชโอรส แถวบางขุนเทียน