Veles e Vents

This guide to Veles e Vents in Valencia's harbor traces how architect David Chipperfield built a grandstand resting on just four concrete columns, its largest terrace cantilevered fifteen meters over open air. It follows engineers at Boma and Grupotec solving how to keep that much concrete from snapping, and the eleven-month sprint to finish the building for the 2007 America's Cup. Stand under the overhanging edge and look up; there's no column above or below you, just harbor air.