Pros
It was fun being an intern at Visa. The technology side is housed at the huge Singpost Centre office at Paya Lebar. It's 5 or 6 storeys of beautiful office space, decked above a happening mall that has a cinema, food court, grocery store, nice eateries, and more. In the office, we have pool tables, table tennis, console games, napping pods, a well-stocked pantry, a gym, and a nice outdoor pateo. The working spaces are spacious too, though I've heard they will be transitioning to a slightly more open working concept, which will mean slightly smaller individual spaces.
Nevertheless, I'd rate the office environment a 5 out of 5.
Cons
Interns were promised (during the post-interview stage of applications) a trip to California for the Visa intern summit (annual event attended by interns worldwide) but somehow my batch (2019) was the first ever one where they decided to cancel it. We were instead given a local 2-day boot camp (no stayover) where we attended talks and mingled with each other at the Business-side Visa office at Robinson Road. It was not an alright consolation prize, I guess, but damn, was it a huge pity that we could not go to California.
It was a real bummer, and we were only informed AFTER we'd joined as interns.