A sign should be posted, I thought, that warns those fearful of heights not to enter. I was walking into a riverfront slum, one in which every home was built on stilts—some very high stilts. Even the sidewalks that weaved through this collision of cobbled-together buildings were built on interconnected stilts that tied everything together in what seemed an uneasy truce with gravity. I didn't want to look down, as it was impossible to avoid seeing the ground far below through the gaping gaps between boards—but if I didn't, a slight misstep might seriously ruin my day!