The new Hall Zero expands Fira Barcelona’s Gran Vía exhibition centre, linking the glazed lobby with its distinctive sculptural columns to the monumental pavilion beyond. A translucent skin bridges between glass and solidity, shading and ventilating while recalling the industrial context. Two vast superposed halls, flexible and luminous, unfold with clarity and scale, complemented by terraces and gardens. Certified LEED, the building integrates advanced strategies for energy, water, and climate, becoming both a civic landmark and an architecture attuned to its time.