Sri Maha Mariamman Temple also known as Maha Uma Devi or Wat Khaek.
It's the primary Hindu Temple in Bangkok.
You can reach it by BTS Skytrain (Silom Line) and leave the train at Chongnosi or Surasak Station.
The Temple is at the corner Silom Road / Soi13.
More Bangkok Galleries :
Wat Kheak (Indian Temple)