The seaside home was built using local materials to make it feel like it was gently eroded by the wind and the sun

Both the interior and exterior of this shell-shaped villa resemble a wind-eroded rock—a sculpture in pure white. In its main room, there’s an arrangement of coffee tables by Mogg and a vintage rattan chandelier purchased on the website Pamono. The Paysage II rug is by Atelier Février, the two Luna wall lights are by Porta Romana, and the cups and saucers are by LR Ceramics. Carolina Gheri

When designer Federica Gosio talks about this project in Sardinia , she describes it as “an arch over the sea.” Gosio—who leads the firm bearing her name and is also a cofounder of Studio MILO —explains, “the truly unique aspect of this home is its ability to adapt to its surroundings, the sea, and nature.” Overlooking the bay of Porto Rafael, an area on the island’s northern coast famous for its remote location and its scenic beauty, the house resembles a seashell .

The villa looks like a white shell that…