This is one of the many entrances / exits at the Raffles Place MRT Station (Station Code: EW14 / NS26). Raffles Place Interchange is one of the main interchange in the Singapore train system, and also one of the busiest too.
This photo is of the main entrance/exit, which has the colonial style architecture, and facing the Raffles Gardens.
Do you know how many entrance/exits are there in this station? Hint here.
If you have a Mass Rapid Transit system in your city, which is the busiest station?