The huge site sprawls along the island’s west coast, from the stadium in the north to the old trading warehouses to the south. Standouts include the Sanctuary of Apollo temples and the Terrace of the Lions. The remains of private houses surround the semicircular theater, and the site includes several agoras, monuments, sanctuaries and temples. You can see finds from the excavations at the site museum, including the original lions from the much-photographed Terrace of the Lions. Another must-do is the climb up nearby Mt Kythnos for views over the island, sea and site.
You can’t stay overnight on Delos, which has been uninhabited since 478 BC. Facilities are limited, so pack a picnic and bring all the essentials, including a sunhat and walking shoes.