Building higher, ever higher, is the culmination of an ancient dream, from the mythical Tower of Babel to the Eiffel Tower. A landmark feature for more than two centuries in the cityscapes of New York, Chicago, Rio, or Sao Paulo, towers have now reached Asia, where they are beating all records for height. A building more than 3,200 feet high is being planned in Malaysia. Far from going out of fashion, this architectural challenge has become the essential element of the contemporary urban landscape. Its current omnipresence can be explained partly by the need to gain space in cities that are more and more satured, but not entirely. The absolute symbol of economic growth, the tower is the prerogative of the superpowers, but in countries that are developing, they are an assertion of their success. In Paris or New York, towers crowd the business districts. In Dubai and Shanghai, these giants of concrete and steel have radically transformed the shoreline. Everywhere, architects rival each other in originality: round, triangular, twisted, cigar-shaped, military shell-shaped, or even in the form of an icy peak… All have their special place in the typology of modern architecture, which encourages research into new, ever-stronger, and lighter materials. On the frontier where architecture, urbanism, economics, and sociology meet, this documentary does the tour of the towers of the world, with commentaries from their engineers and some of the most significant of contemporary architects, including Jean Nouvel, Christian de Partzamparc, Paul Andreu, and Norman Foster.