La Fábrica is one of Ricardo Bofill’s most iconoclastic creations. A former cement factory on the outskirts of Barcelona, serendipitously discovered while driving, the building became the centre of the late Catalan architect’s life, serving both as his home and as the headquarters of his practice since 1973. Here, Ricardo created a world of his own, exposing the concrete forms from beneath years of dust and smoke, encouraging nature back onto the structure, and fine-tuning the balance between its monumental scale and a delicate, human sensibility, in one of the earliest examples of the reuse of an industrial building—and it’s still changing.