Probably the largest and wildest crowd in Bangkok; The entire 5 km length of this street - mostly known for Patpong - is packed on two levels with thousands of young Thais carrying anything that can spray water. The best part is that you can enjoy the party in relatively dry surroundings by staying on the BTS sky walk that runs above the street. Relatively means that you should still carry any valuable items in a plastic bag. From up there you can witness the full extent of the game: a huge colorful crowd of smiling young Thais slowly walking between two rows of stalls selling water guns, food, soft drinks and of course, lots of beer. The highlight is to spot the firetrucks ambushed at each intersection with their incredibly powerful water hoses. The crowd is actually delighted to be hosed down as the heat can reach 40˚C in the sun.