Tiber Island is a boat-shaped rock in the middle of Rome that has been treating the sick for more than two thousand years. Romans faced it in travertine and carved it into a ship, and the prow at the downstream end is still there, marked with a snake curled round a staff. A hospital has stood on the island ever since, and the one there now is a working emergency hospital with ambulances arriving at all hours. The healing began in the 290s BC, with a temple of Asclepius raised here after a plague.
You cross to it on Ponte Fabricio, built in 62 BC and the oldest bridge in Rome still carrying people on its original stones. The island is also the easiest place in the city centre to get down to the water: stairs run to the embankment level on both sides, below the high walls built after the flood of 1870. In 1943 doctors in the hospital here hid people from a round-up by inventing a contagious disease and writing it on their charts.