The document discusses innovations in windows, roofs, and facades that are redefining architecture. It profiles several architectural firms and projects from around the world that are experimenting with new materials and designs for envelopes. Specifically, it highlights the Harbin Opera House designed by MAD Architects, which features an undulating white aluminum facade that blends with the snowy landscape, and the Naman Retreat Resort by Vo Trong Nghia Architects, whose hotel building is clad in a concrete and greenery facade designed to reduce sunlight and induce wind flow. The article examines how technologies like double glazing, photovoltaics, terracotta, zinc and weathering steel are being used innovatively in