What is it? Completed in 306 AD in honour of Emperor Diocletian, these huge, ancient baths were abandoned when aqueducts were cut off, towards the end of the Roman Empire. Today they stand next to the city’s main transport hub Termini, as part of the National Museum of Rome.
Why go? Leave yourself extra time before catching a train to browse the haunting funerary sculptures, tombs and sarcophagi displayed here, or the temporary exhibitions dedicated to the works of greats such as Henry Moore and Rodin.