Ricardo Manuel Pires Martins likes to brag about the popularity of his bar among Japanese tourists. We don’t begrudge him that, because if you’re in the market for seafood, particularly the less-cooked kind, as these tourists evidently are, Adega Pérola is your bar. Tucked on a commercial lane a few blocks behind the Art Deco condo-and-hotel jam that is the Copacabana beachside, Rio's Adega Pérola sticks close to its Iberian roots, with wine jugs lining the high wall shelves and a selection of about a hundred tapas stewing in their respective marinades behind the glass bar window.

The eyes of Tacacá do Norte’s harried staff widen as yet another customer arrives during the lunchtime rush. The bedroom-sized snack bar can barely hold one line of chairs around its bar but they have somehow managed to squeeze in two. Impatient regulars shake hands and whistle “psst” to the young men staffing the establishment, who gingerly hand steaming pots of shrimp soup and freshly puréed juices over the packed bar.

For a city whose natural beauty is what often sweeps visitors off their feet, Rio’s historical gems often look a little like urban ugly ducklings next to the bikini crowds and chic bars on sandy Ipanema beach. That’s a shame, because Rio Antigo has a great story to tell. Old Rio runs along the Guanabara Bay rather than the open Atlantic, and it was the former that gave the city its name – River of January – when Portuguese explorers came upon it in the first month of 1502.