The giant walls and mighty buttresses look as if they had been carved by wind and weather out of some solid rock-mass, rather than as if wrought by human handiwork. But when, in the middle of the twelfth century, in the earliest days of the reign of Henry Plantagenet, the castle was built by Robert, son of Harding, he built it with outer walls ten to fifteen feet thick, without definite plan as it would seem, but, as the work went on, suiting the building to the shape of the hillock and to the existing demands of defensive warfare. When the day is coming to its close, and the light becomes a little dim, and thin mist-films rise level from the meadows, it might be an enchanted castle; for in some tricks of evening light it cheats the eye into the semblance of something ethereal--sublimate--without substance--as if it were some passing mirage, built up for the moment of towering masses of pearly vapour. So does an ancient building come back into sympathy with earth and cloud. Its stones are carved and fretted by the wind and rain of centuries; tiny mosses have grown in their cavities; the decay of these has formed mould which has spread into every joint and fissure. Here grasses and many kinds of wild plants have found a home, until, viewed from near at hand, the mighty walls and their sustaining buttresses are seen to be shaggy with vegetation. These immense buttresses on the meadow side come down to a walled terrace; their foundations doubtless far below the visible base. The terrace level is some twelve feet above the grassy space below. The grass then slopes easily away for a distance of a few hundred feet to the alluvial flat of the actual meadow-land. Large fig-trees grow at the foot of the wall, rising a few feet above the parapet of the terrace, from which the fruit is conveniently gathered. It is in the deep, well-sheltered bays between the feet of the giant buttresses that the most interesting of the modern flower gardening at Berkeley is done. White Lilies grow like weeds in the rich red loam, and there are fine groups of many of the best hardy plants and shrubby things, gathered together and well placed by the late Georgina Lady Fitzhardinge, a true lover of good flowers and a woman of sound instinct and well-balanced taste respecting things beautiful both indoors and out. The chief relic of the older gardening at Berkeley is the remains of the yew hedge that inclosed the bowling-green on three sides; the fourth side having for its boundary the high retaining wall that supports the entrance road beyond the outer gate. The yews, still clipped into bold rounded forms, may have formed a trim hedge in Tudor days, and the level space of turf, which is reached from the terrace by a flight of downward steps that passes under an arch of the old yews, lies cool and sheltered from the westering sun by the stout bulwark of their ancient shade.