Monumento naturale Palude di Torre Flavia, Coastal nature reserve in Cerveteri, Italy.

Monumento naturale Palude di Torre Flavia is a 43-hectare protected wetland between Ladispoli and Cerveteri, reaching the beach beside the ruined Torre Flavia. It is a mosaic of shallow brackish pools, reed beds, dune ridges and interdunal hollows, with a bare sandy shore where salt and humidity keep plants from rooting.

The reserve takes its name from the ruined Torre Flavia, a Renaissance tower built in the 1500s by Cardinal Flavio Orsini on the orders of Pope Leo X. From the early 1970s, land reclamation and urbanisation shrank the original marsh. Local petitions, clean-up days and the 1986 book "Tra Acqua e terra" led the Lazio Region to establish the 43-hectare monument by decree on 24 March 1997.

The reserve takes its name from the ruined Torre Flavia, a 16th-century tower built by Cardinal Flavio Orsini under Pope Leo X. In 2014 it won an online contest as the best oasis for birdwatching, organised by the EBN association. The reed beds host species such as the Cetti's warbler, great reed warbler and bearded reedling.

Entry is free and open anytime, but the terrain is wet and muddy, so proper footwear and clothing are essential. Bring binoculars for bird watching and allow time to move slowly through the area.

The reserve was named a Special Protection Area under the EU Birds Directive 79/409/CEE, and in 2014 it won an online vote by the EBN association as the best oasis for birdwatching. Hunting, building and pesticide use are banned throughout its 43 hectares.