Of all Rome’s seven hills, however, the Palatine was the most exclusive by far. Here the city’s elite chose to cluster. Only the very, very rich could afford the prices. Yet, incongruously, there on the world’s most expensive real estate stood a shepherd’s hut made of reeds. The reeds might dry and fall away, but they would always be replaced, so that the hut never seemed to alter. It was the ultimate triumph of Roman conservationism – the childhood home of Romulus, Rome’s first king, and Remus, his twin.