I visited The Old Custom House on 36 Charoen Krung in Bang Rak. Then I read this from a Bangkok Blogger - Richard Barrow - "the firemen and marine police have already moved out. They will start renovations next year to turn it into a hotel. So be quick if you want photos."
I was searching for some Street Art and I took the wrong road.
There is a wonderful building on the sides of the river.