This gallery would come up atop the current subway, a key connectivity between lakhs of railway passengers to nearby BMC headquarters and the western side of the locality.
CST attracts hundreds of people everyday and they are often seen taking photographs of the British-era building or clicking selfies with the structure in background.
"However, they do not find a suitable place for such activities. Sometime tourists come in the middle of the busy road opposite the building, which poses threat to their lives. Therefore, we have decided to set up a viewing gallery," said the official.
The iconic Chhatrapati Shivaji Terminus (CST) has been found to be the most photographed building in the country after the Taj Mahal in Agra.