Quatro Águas is where Tavira runs out of land. The riverside road follows the Gilão out of town, past the salt pans, until river, lagoon and the channels to the sea all meet at one modest corner — the name means ‘four waters’, and from the little pier you can watch all of them at once. It’s the departure point for the Ilha de Tavira ferry, and at the end of the day it becomes the east’s most relaxed sunset spot: boats swinging on moorings, the old tuna-fishery buildings across the water, salt pans going pink behind you and the barrier island lying flat on the horizon.
There’s no monument here — the subject is the meeting of waters and the traffic on them. Ferries and small boats give you moving elements; jetties, mooring lines and the low ruin of the old Rato fort out on the marsh give foregrounds. It’s a working corner rather than a groomed miradouro: a pier, moorings, a couple of unhurried seafood restaurants.
When to go: sunset, without much argument. The light drops over the town side and the salt pans, the lagoon goes to metal, and the last ferries of the day cross through it. Mornings are the quiet alternative — mist sits on the water in the cooler months and the pier is empty.
Who it’s for: sunset collectors staying in Tavira — this is the closest big-sky water view to town, an easy flat walk or cycle out. Photographers who prefer boats and jetties to cliffs as foreground. And anyone catching the island ferry anyway: go early, or come back for the light.