Philippines
The Metro Rail Transit in Metro Manila is expanding its underground MRT malls and they mainly serve is to escape the heat, advertising area, some boutiques and food stalls, and as street crossings. In the capital city of Manila, Quiapo's underground system serves as street crossings and underground mall. In Makati City, aside for street crossings, during heavy rains, it serves as flood control to avoid flood above the streets.
Read more about this topic: Underground City