Travelers have marveled at Egypt's archaeological wonders for centuries, ever since the Ancient Greeks visited the pyramids. Today, the ancient wonders attract millions of tourists each year to the pyramids, temples, mosques and great monuments of the Nile Valley, as well as the stunning diving resorts of the Red Sea. The life-giving Nile pours across the map, feeding an emerald ribbon of irrigated fields adjacent to villages shaded by date palms. Whether on a cruise ship or traditional felucca, life on the water is a constant visual feast, while the few huge, dusty cities – Cairo, Alexandria, Aswan and Luxor – are a babble of exotic sounds and smells.