Avdat, in the heart of the Negev highlands, is a great destination to add to your itinerary if you happen to be visiting Israel in the winter. If the weather in Jerusalem suddenly turns rainy (or even snowy) at a moment's notice, you can swap out a cold and wet day in the capital to bask in the nearly winter-long warmth of the Negev, while taking a fascinating tour of the ruins of one of the area's most famous...