- Christmas at Longwood Gardens (Kennett Square, Pa., in the Brandywine Valley; tel. 610/388-1000): Everyone forgets that it's cold as they slow down to gaze at the thousands of lights -- maybe millions -- that turn the gardens into pure magic. Then they go into the conservatories to see the poinsettias and Christmas decorations. "Winter wonderland" is so cliché, but it's really true in this case.
