Phare de Walde, Maritime lighthouse in Marck, France

The Phare de Walde is a lighthouse in Marck on France's northern coast, standing as a navigational marker between the North Sea and the English Channel. The structure rises above the flat coastal landscape and now serves as a historical monument rather than an active aid to shipping.

The beacon was built in 1859 to guide ships safely through northern French waters, serving as a vital aid to navigation for many decades. By 2001, it was decommissioned as a navigational tool, ending its primary function while the structure itself remained standing.

The lighthouse marks the boundary between the North Sea and the English Channel, three miles east of the Calais lighthouse. Its hexagonal platform, seven metres across, carries a one-metre-wide balcony with an oak floor, and the five-metre sheet-metal keepers' cabin was lined with oak inside and painted black, as was the lantern above it.

The tower stands on sand about three miles east of the Calais lighthouse, in the Marck commune of Pas-de-Calais. It is no longer lit for navigation, so there is no best hour tied to a light signal; the metal lattice and rusted lantern room are seen from outside. The structure is fenced off and awaiting the renovation announced after its listing in 2022, so visitors view it from the surrounding sand rather than climbing it.

The beacon was built using an English design and features wrought iron, sheet metal, and cast iron construction, making it structurally different from other French lighthouses. This British building technique was noteworthy in the 1800s and shows the international trade connections of this coastal region.