In late spring, the White Garden at Hidcote in the English Cotswolds is far more colorful than its name suggests. One of a series of garden "rooms" designed by an American, it encapsulates everything one would expect. Peonies, bluebells and alliums spill out over the winding path. Topiaries hint at other more formal gardens just a stroll away. There is even a thatched-roof cottage. Who would not want to linger a while?