Here you are eating in a national monument, a low-lying concrete-and-glass building that seems to merge with the rocks tumbling down to the Atlantic. It’s an early masterpiece by Porto's great modernist architect Álvaro Siza Vieira. His "teahouse" that opened in 1963 had fallen on hard times, but reopened in 2014 in the hands of chef Rui Paula, the man behind Porto's DOP restaurant and the riverside DOC up the Douro. Paula has created a menu equal to the architecture and the setting. Amid Siza Vieira's wood-lined interior, looking out over the surf, diners can tuck into exquisitely presented dishes like line-caught Atlantic hake served with goose-barnacles; wild rabbit with oats, cabbage and mackerel; or wagyu beef with wild mushrooms. A truly special dining experience out in the seaside suburb of Leça da Palmeira.