Celebrating the hedonism, style and flamboyance of 1920s Berlin, everything about Engel cocktail bar brings the sips and sounds of a bygone era back to life in the City of London. Nestled on the north mezzanine – surrounded by its famous murals – and out on the terrace of the Grade I Listed Royal Exchange, with a luxurious design by Karen Taylor of Pattern Haus, Engel is open all day.