The Nemi ships were two ships, one larger than the other, built under the reign of the Roman emperor Caligula in the 1st century CE on Lake Nemi. Although the purpose of the ships is only speculated upon, the larger ship was an elaborate floating palace, which contained quantities of marble, mosaic floors, heating and plumbing, and amenities such as baths. Both ships featured technology thought to have been developed historically much later. It has been stated that the emperor was influenced by the lavish lifestyles of the Hellenistic rulers of Syracuse and Ptolemaic Egypt. Recovered from the lake bed in 1929, the ships were destroyed by fire in 1944 during World War II. Location Lake Nemi (, ) is a small circular volcanic lake in the Lazio region of Italy, south of Rome. It has a surface of and a maximum depth of . There is considerable speculation regarding why the emperor Caligula chose to build two large ships on such a small lake. From the size of the ships it was long held that they were pleasure barges, though, as the lake was sacred, no ship could sail on it under Roman law (Pliny the Younger, Litterae VIII-20) implying a religious exemption. Caligula particularly favoured the Egyptian Isis cult which he had established in Rome and also supported that of Diana Nemorensis whom, in the Roman tradition of syncretism, he likely viewed as an aspect of Isis. Situated on opposite sides of the lake and atop the crater walls are the towns of Genzano and Nemi. Genzano was dedicated by the Romans to the goddess Cynthia, a cult associated with that of Diana Nemorensis. Nemi did not exist in Roman times. The name Nemi derives from the Latin nemus Aricinum (grove of Ariccia), Ariccia being an important nearby town associated with the worship of Diana and the god Virbius. Located at Nemi are the ruins of an ancient temple dedicated to Diana, which was connected by the Via Virbia to the Via Appia (the Roman road between Rome and Brindisi). During the time of the Roman Empire, the area around Genzano was used by wealthy Roman citizens for its clean air, uncontaminated water and cooler temperatures during the hot summer months. The lake has its own microclimate and is protected from wind by the crater walls. Johann Wolfgang von Goethe, Lord Byron, and Charles Gounod all lived in