Take off at Phaya Thai Station - Exit 4. You will meet with Florida Hotel, Keep walking straight untill you reach Honda Showroom then take an overpass bridge to Si Ayutthaya Building (Ajinomoto Thailand Building)

Starting from Victory Momument (Same side with 7-11 or Pong Lee restaurant) take the bus number: 14, 17, 74, 77, 536, 539, 547. The Bus will reach Phaya Thai intersection and turn left onto Si Ayutthaya Road, exit once the bus reach Si Ayutthaya Building stop. If you start from Thewet or Klong Toey, take the bus number: 72