Concierge.com's insider take:
A snackería from the Adrià brothers Ferran and Albert, 41° has been drawing a crowd of curious locals and eager tourists to the unfashionable neighborhood of Poble Sec since it opened in early 2011. First and foremost, it's a cocktail bar, featuring a sophisticated velvety interior, diamante-encrusted wall art, and jazzy background music. The cocktails are creative enough (non-oxidized water makes the ice last longer, and the humble sangria is presented in a martini glass) but it is the bar "snacks" that highlight the Adriàs' signature wackiness (and account for the venue's appearance here rather than in Concierge.com's nightlife section). Try the black currant and yogurt profiteroles, spherified olives, and seaweed and quinoa crisps, and you'll never consider nuts worthy cocktail nibbles again. Next door, the more colorful and casual Tickets Bar—also from the Adriàs—serves both traditional and creative tapas. Reservations essential.—Suzanne Wales
Open Tuesdays through Saturdays 6 pm to 2 am (last food service, 11 pm).