These double-arched entrances, of which there are several still standing in the Channel Islands, were constructed as status symbols to display to passers-by the driveway or ‘cache’ to a house of quality. Built around 1640, The Ivy Gates, a double arch standing at  the top of the Rohais, St Peter Port, were gifted to the Trust in 1967 by the heirs of the late Henrietta Herries. At that time, the handsome granite arches were under threat from the covering of destructive ivy, which was carefully removed and  the gateway taken into permanent care. Built from local grey granite, the massive arches formed the entrance to the avenue leading to Les Granges de Beauvoir Manor. The coat of arms  of the de Beauvoir family, who acquired the property in 1603, can be seen at the top of the arch. There is one arch for carriages and the smaller arch for pedestrians. Both now appear to be  very low because the adjacent road levels have been built up  over the years. Map Reference N.

A second set of archways in the care of the Trust at Les Blancs Bois, Rue Cohu, Castel, is a handsome double arch forming the entrance to a large estate, which dates back at least to 1481, when Nicholas Fouaschin of Blancs Bois became Bailiff of the Island. The arches, however, date from the second half of the seventeenth century and are the best-preserved feature of the estate. They are constructed from Jersey stone, distinguished from similarly coloured Cobo granite by its regular black flecking. Map Reference M. 

Both Les Blancs Bois and Ivy Gates Archways have been designated as Protected Monuments by the States of Guernsey; Les Blancs Bois in 1970 and the Ivy Gates in 1981.