Between the São Conrado and Barra da Tijuca districts lies the exclusive quarter called Joá—Rio’s answer to Beverly Hills—amid whose mansions hides a secret next to zero visitors know: Joatinga Beach, a shoreline as incredible as it is hard to get to. For instance, you can find it only at low tide (yes, the beach is that small). And even though it’s officially public—as are all Brazilian beaches—you reach it by finding your way through the labyrinth of a built-up city neighborhood. There’s no cell service and barely any Internet. But the minute you tread the sand and wade into the turquoise waters, you forget all the rest, which is no easy trick in the middle of busy Rio.