Patpong Bangkok is the largest, and longest established, of the 3 main adult entertainment areas geared towards tourists. The other two being Soi Cowboy and Nana Plaza.
Up until around 2002 it was by far the busiest of the 3 areas. It then fell behind both Cowboy and Nana in terms of the adult entertainment. However the tourists still flocked to the night market with the bars becoming a bit of a side-show. However, in 2015 it has become more problem again due to the high prices in Cowboy and recent issues at Nana Plaza.
The easiest way to get to Patpong is to take the BTS Skytrain to Sala Daeng station in Silom. Patpong Sois 1 and 2 are around 100 metres from the station.