Top choice rooftop bar in City Centre

Siglo's sought-after terrace comes with Parisian flair, wafting cigar smoke and serious drinks. It fills with suits on Friday night, which may lure or horrify you. Regardless, pick a time to mull over a classic cocktail, snack on upper-crust morsels and admire the 19th-century vista over Parliament and St Patrick's Cathedral. Entry is via the similarly unsigned Supper Club.