2 Best Sights in The Algarve, Portugal

Near the marina lies the site where Vilamoura was first established—Cerro da Vila—a Roman villa complex dating back to the 1st century AD. Excavations have uncovered mosaic-lined residences, bathhouses, fish-salting tanks, and an elaborate plumbing system. The adjacent recently renovated Museu de Cerro da Vila reveals its 5,000-year history, from Bronze Age graves to rare Roman and Islamic-period artefacts.

The ruins at Milreu, about 10 km (6 miles) northwest of Olhão, were first excavated in 1877. The settlement once known as Roman Ossonoba—including a temple (later converted into a Christian basilica) and mosaic fragments adorning some of the 3rd-century baths—date back to the 2nd through 6th centuries.