Colombo is the biggest mall I have ever been to. Pay attention because I always amost get lost in the parking! Parking is expensive :) It is the truth, but inside you have everything you need, want to buy, fnac, you do, zara, you do, disney store ... Everything absolutely everything. If what you need is to eat, go ahead, you have American style food like KFC, Italians, even Japanese food! Truly amazing. You could go a couple of hours, just out of curiosity. It even has has a roller coaster (very small of course) but I had never seen anything like it ... Incredible.
I really liked this mall which is also the entrance to the Park of Nations. We went underground and then got off at the East station which incidentally was designed by Santiago Calatrava arquiecto for Expo 98 in Lisbon and in front is the mall. A curious thing about this shopping center is that the roof is transparent and it runs through a sheet of water. If you go to the restaurant terrace, you will see beautiful views of the park.