Onze-Lieve-Vrouw-ter-Duinenkerk, Modern Catholic church in Koksijde-Bad, Belgium

Onze-Lieve-Vrouw-ter-Duinenkerk is a Catholic parish church in Koksijde-Bad, built 1956–1962 to a design by Jozef Lantsoght. Its floor plan follows the shape of a cockle shell, and the steel roof forms two colliding waves topped by a copper sphere and cross by Antoon Viaene. White brick clads the concrete frame, and the interior has no columns blocking the altar.

The building was constructed between 1956 and 1962 by architect Jozef Lantsoght, shaping modern religious architecture on Belgium's coast. It received protected monument status in 2005.

The interior features contemporary stained glass windows by Gabriël Loire that depict modern religious subjects. Since 1968, the church has housed a sacred relic that holds significance for pilgrims and believers.

The church stands in Koksijde-Bad, a short walk from the beach and the coastal tram line. The entrance is at ground level and the interior is free of steps, so wheelchairs and pushchairs move easily between the rows of pews. Look for the confessional beside the organ, built into the wall so that it almost disappears into it.

The detached tower in the original plan was never built because of the nearby military airfield. The copper sphere atop the roof, by Antoon Viaene, measures 1.20 m across and carries a cross 5.50 m high and 1.20 m wide; the two weigh 175 and 270 kg.