Often, travelers visit a place, and though the stay is enjoyable, know they will never feel the urge to return. On the other hand, are there destinations, those classic sites, that never lose their attraction? Author George Plimpton's answer is succinct: "You go back to the ones you can't get your fill of."

"I don't think I would return to York or Manchester or Sioux City," he says, "but maybe that's my fault. And I don't think I would hop on the Concorde to see the Eiffel Tower again, though I might go back to watch fireworks from it or I might take my two small children. I've never been to the Taj Mahal or Angkor Wat."

His favorite places to see again:

* Venice: "It's a place you never get your fill of."

* Paris: Ditto.

* "Almost any place in Africa": "I've just come back from South Africa and Zimbabwe. I went to Lake Kariba on the Zambezi River. It's the second-largest manmade lake in the world. I'm sort of a birdwatcher, and I was looking for a Pel's Fishing Owl. I found it, too. I'm very pleased." The dammed waters, covering the trunks of the trees, have created something of a petrified forest in Lake Kariba. "It's the most astounding sort of landscape."