Online Video Guide

In Japan, plans are on the table to build the tallest structure on earth. Called Sky City, it will be a kilometer tall, twice the height of any existing building. The towering, vertical city will house more than 100,000 people and provide for every aspect of modern life with parks, schools, homes, offices and shops. A solution to Tokyo's terrible land crunch, Sky City would be home to the world's very first homesteaders in the sky. But troubling questions surround it. Can it be built? And would it be safe from disasters both natural and man made, including earthquakes, typhoons and the very worst that can strike a tall building: deadly fire. Engineers and builders in Japan, Taiwan and Canada tackle these and other tough problems as they attempt to overcome obstacles and set the stage for the construction of one of the most daring feats of engineering ever attempted.