The Po River Delta Discovery Guide

The Delta is the least Italian-looking place in Italy: no hills, no hill towns, no view that isn't horizontal. For anyone who has spent a week among Palladian villas and walled cities, the effect is startling.

It is one of Europe's significant wetlands. Over 300 bird species have been recorded, greater flamingos now breed in the lagoons, and the mix of freshwater channel, brackish sacca and open sea supports densities of herons, egrets and waders you will not see elsewhere in the north.

The Sacca degli Scardovari is the working heart of it -- a shallow lagoon covered in mussel and clam beds, worked from flat-bottomed boats, with the fishermen's huts on stilts around its edge.

And there is the history of the place: Ca' Vendramin, the great early-twentieth-century pumping station that drained the Polesine, is now a museum of reclamation, which in a landscape below sea level is not a niche subject but the explanation for everything.

If you travel slowly: three or four days, based in Porto Tolle or Rosolina, mixing boat trips with long flat cycle rides. The Delta does not reward hurry; the point is the light and the quiet.

If you want the essentials: one boat trip into the Sacca degli Scardovari or up the Po di Maistra, and the Ca' Vendramin museum. A full day.

If you're after local character: eat where the fishermen do, at one of the shacks around Scardovari -- mussels, clams and grilled eel, at prices that reflect how short the journey from water to plate was.

If you want to go past the obvious: the Giardino Botanico Litoraneo di Porto Caleri at Rosolina, which walks you through the full sequence from beach to dune to pine wood to lagoon in about an hour -- the clearest explanation of how this coast is put together.

The Delta is a protected regional park and a UNESCO Biosphere Reserve, and the wildlife is the reason to come and the thing most easily damaged. Birds here nest on open ground and on sandbars; keeping to paths and boardwalks, and away from nesting areas in spring and early summer, matters more than usual.

Go with the local boat operators. They are mostly fishing families, they know where the birds are and where not to go, and the money stays in villages that have been losing population for decades.

The mussels and clams of the Sacca degli Scardovari are a genuinely local, low-impact product with protected status, and buying them here is the most direct thing a visitor can do for the place.

This is also a landscape under pressure that no visitor causes: it is subsiding -- partly a legacy of mid-century methane extraction -- and salt is pushing further up the channels each decade. Seeing it now is seeing something that is changing fast.

April, May and early June are the best: birds at their most active and most numerous, the reeds green, and the mosquitoes not yet at full strength.

September and October bring autumn migration and softer light, and are quieter again.

July and August are hot, humid and heavily mosquito-ridden away from the beaches, though Rosolina Mare is busy with Italian holidaymakers.

Winter is bleak and often foggy, and much closes -- but it is the season for wintering wildfowl, and the Delta in fog is genuinely extraordinary if you are prepared for the cold.

What a visitor actually spends in the Po Delta