Santa Caterina Market

Come shopping for your tomatoes at this extraordinary-looking produce market, designed by Enric Miralles and Benedetta Tagliabue to replace its 19th-century predecessor. Finished in 2005, it's distinguished by its kaleidoscopic and undulating roof, held up above the bustling produce stands, restaurants, cafes and bars by twisting slender branches of what look like grey steel trees. A visual wonder.