The arcading on the northeast side of the piazza was rebuilt as part of the redevelopment of the Royal Opera House, whose main Neoclassical façade dates from 1811 and opens onto Bow Street. Now, however, you can reach the opera house from a passageway in the corner of the arcading. The spectacular wrought-iron Floral Hall serves as the opera house’s main foyer, and is open to the public, as is the Amphitheatre bar/restaurant (from 90min before performance to the end of the last interval), which has a glorious terrace overlooking the piazza