Visiting a medical institution might not be the norm for most, but a glimpse into the workings of Durdans Hospital is worth the time. If you're interested in the health industry, check to see if there's a tour or open day scheduled.
You'll have sightseeing choices galore in Bambalapitiya. Durdans Hospital is an ideal place to start here, but there are many other interesting places to discover. Colombo City Centre, Galle Face Green, and Galle Face Beach are near the health care institution and and will cap off your day nicely.