Despite looking like the setting of a horror movie, the rooftop pool at the Hotel Unique in São Paulo is a popular destination for cocktails in the city. Non-guests are not allowed to use the pool, which appears blood red thanks to its tiles, but the rooftop terrace is open to everyone after 5pm. This tip comes from reader @rabbitohs , an Aussie living in Brazil, who says it's incredible – quite a compliment from someone whose own country is awash with fantastic outdoor pools.