Triumphal arch

'Procession on the River Amstel. Marie de Medici on a small vessel at centre, with Mercury on the back of the boat, Neptune on a conch in central foreground, other small boats on either side, a large crowd onlooking from the river-banks in background, a classical building on an island at left' -- British Museum. Plate 6 from fête book commemorating the royal entry into Amsterdam of Marie de Medici, the exiled Queen Mother of France (1575-1642), in 1638. From: Caspar Barlaeus, 'Medicea Hospes' (Amsterdam: 1638). 'Procession on the River Amstel. Marie de Medici on a small vessel at centre, with Mercury on the back of the boat, Neptune on a conch in central foreground, other small boats on either side, a large crowd onlooking from the river-banks in background, a classical building on an island at left' -- British Museum. Plate 6 from fête book commemorating the royal entry into Amsterdam of Marie de Medici, the exiled Queen Mother of France (1575-1642), in 1638. From: Caspar Barlaeus, 'Medicea Hospes' (Amsterdam: 1638).