Scheldevallei

Scheldevallei is a national park shaped like a river. Its spine is the Zeeschelde — the tidal Scheldt between Antwerp and the old sluice at Gentbrugge — plus the mouths of its tributaries the Durme and the Rupel, and its defining fact is that the North Sea reaches all the way up it: the tide that swings more than five metres at Antwerp is still lifting the river a hundred and sixty kilometres from the sea, dying out only at Ghent's doorstep. Because the salt gives out long before the tide does, the park holds something genuinely scarce — one of Europe's largest stretches of freshwater tidal nature, mudflats and reed fringes and flooded willow woods that drown and drain twice a day. Ecologists reach for "Europe's mangrove" to explain the willow carrs, and they are barely exaggerating: on the continent this habitat survives in fragments, and the Scheldt carries the reference example.

The park is also the dividend of a flood plan. After the storm surge of 1976 broke the dikes at Ruisbroek, Belgium answered with the Sigmaplan; its 2005 rewrite traded ever-higher walls for room — polders opened to the river as overflow, many of them fitted with clever double sluices that let a reduced tide breathe in and out daily, so the safety valve is also a growing marsh. At Kruibeke, opposite Antwerp, the country's largest flood-control area puts six hundred hectares behind an overflow dike; at Lippenbroek near Hamme a small polder became, in 2006, the world's first controlled-reduced-tide experiment, the pilot the rest now copies. Downstream along the Rupel the older economy shows through: the clay that built Flanders — geology's actual Boom Clay, named for the brick town — was dug here for centuries, and the flooded pits and derelict kilns are being folded into the same green seam. The 2023 national-park label, in other words, ratified a river that engineering had already begun handing back.

What convinces is the comeback. The Scheldt of the 1970s was biologically dead through Brussels's and Ghent's sewage; after decades of treatment works the oxygen returned, and with it the twaite shad, spawning again in the bends near Temse after the better part of a century away. Beavers work the tributaries, bluethroats sing from every second reedbed in April, avocets and godwits probe the flats, and winter packs the mud with teal and pintail. Off the tidal spine the park gathers the valley's older waters — the hay meadows and creeks of the Kalkense Meersen, the Donkmeer at Berlare, an abandoned meander turned peat-lake — and one literary shrine: at Sint-Amands the poet Emile Verhaeren, who wrote the Scheldt into Flemish letters, lies buried on the bank of the great bend he grew up watching.

What's worth knowing before you go

There are no gates and no single entrance — the practical approach is rail plus riverbank: Temse and Bornem stations serve the middle river, Schellebelle village station opens straight onto the Kalkense Meersen, and Dendermonde is the junction for the lot. The little free ferries — Schellebelle, Appels, Baasrode among them — are the park's own transport and the best thirty seconds on the water you will get for nothing. Time walks to a falling tide, when the flats are freshly bared and busiest with birds, and take the mosquito warning seriously in the willow woods in high summer. The connoisseur's stop is Sint-Amands at high water, when the river fills its bend below Verhaeren's grave — with the neoclassical Notelaer pavilion downstream at Bornem as the elegant afterpiece.