How far can a single building extend its reach to elevate, both aesthetically and economically, a surrounding neighborhood? Zaha Hadid Architects' Edifici Torre Espiral, or "spiraling tower," designed in partnership with Patrik Schumacher, seeks to become a catalyst for the development of the 22@Barcelona district. This waterfront area, which covers 115 city blocks, has been actively transforming itself from a derelict industrial zone into a commercial hub since 2000, when the city government launched its redevelopment.