Sky Lounge, the rooftop bar at the Kingsbury Hotel in Colombo, has one of the best sunsets going in the city. Take your pick to accompany your sundowner: the sun as it dips into the Indian Ocean, or the panorama along the shore from the edge of Colombo Port to the Old Parliament and down the Galle Face Green. Many reviews take the bar to task for indifferent service and steep prices, but balmy sea breezes the setting make at least one visit to the Sky Lounge worthwhile.
When I was in Colombo, there was an added bonus after sunset: a full moon hanging right next to the nearby World Trade Center towers.
One mojito, three fabulous views!