It was earlier known as St. Thomas mount road. It is one of the most important roads/localities of chennai. This place is almost 400 years old. The length of this road is approximately 13 kilometers and there are many head offices of commerical companies. This road has origins from the british era when the european traders used this road to travel to a few important places around. Even today, the Anna Salai has not lost its charm. There are several corporate houses located in this area.