Alexander the Great was an immensely popular figure in the classical and post-classical cultures of the Mediterranean and Middle East. Almost immediately after his death in 323 BC a body of legend began to accumulate about his exploits and life which, over the centuries, became increasingly fantastic as well as allegorical. Collectively this tradition is called the Alexander romance and some recensions feature such vivid episodes as Alexander ascending through the air to Paradise, journeying to the bottom of the sea in a glass bubble, and journeying through the Land of Darkness in search of the Water of Life (Fountain of Youth).