Of all the excursions on offer along this coast, only one takes you off the map of beaches and dive boats entirely. Before the first light touches the Red Sea, a comfortable air-conditioned vehicle collects you from your Sahl Hasheesh hotel and points west — across the desert, toward Cairo, and toward the reason people have travelled to Egypt for two thousand years.

The capital reveals itself slowly. Your Egyptologist meets you and leads you into the Egyptian Museum, where the gold of the pharaohs sits close enough to touch behind the glass, and every case has a story your guide is ready to tell. Later you trade the crowds for the water: a gentle boat carries you along the Nile, the river that has fed this civilisation since before the Pyramids were dreamed of, the city passing quietly on both shores.

Then you come to Giza, and the scale rearranges something in you. The Great Pyramid of Khufu was the tallest thing human beings had ever built for nearly four thousand years, and standing at its base — neck craned, a hand flat against a block lifted into place forty-five centuries ago — you understand why it was counted among the wonders of the world, and why it is the only one of those seven still here to be touched. The Sphinx watches from its hollow nearby; the Valley Temple shows you how the impossible was actually done.

The drive back to the coast is long and quiet, and you spend it somewhere between exhaustion and disbelief. You came to Egypt for the sea, and you found it — but you will fly home talking about this: the day you left the beach behind and stood, in person, before the oldest wonder still standing on Earth.