Costaérès Castle on its pink granite islet facing Saint-Guirec beach, near our hotel in Perros-GuirecCostaérès Castle on its pink granite islet facing Saint-Guirec beach, near our hotel in Perros-Guirec
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Beyond the walls

Costaérès: its castle, its legend

Costaérès Castle on its pink granite islet facing Saint-Guirec beach, near our hotel in Perros-Guirec

Facing Saint-Guirec beach and visible from the terrace of the Castel Beau Site, the Château de Costaérès stands with its neo-medieval silhouette on a small island of pink granite. Its name comes from the Breton "coz-seherez," meaning "old drying place," where sailors once dried their fish. Built between 1892 and 1896 for Bruno Abakanowicz, a Polish engineer and mathematician, this holiday manor—crafted entirely from pink granite and slate—exemplifies the late 19th-century trend for grand coastal estates. Several notable figures have stayed there, including Henryk Sienkiewicz, who wrote his novel *Quo Vadis*—which won the Nobel Prize in Literature in 1905—while at the property. As a curious detail, the interior was furnished using salvaged wood from a three-masted ship that ran aground on the surrounding reefs in 1896. Located within a protected Natura 2000 zone, the castle is not open to the public, but its iconic silhouette remains a staple of postcards from the Pink Granite Coast.

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Hikers on the Customs Officers' Path between pink granite rocks and Mean Ruz lighthouse, near our hotel in Perros-Guirec
Beyond the walls

The Coastal Path

Starting from Saint-Guirec beach, just a few steps from Castel Beau Site, the Sentier des Douaniers (Customs Officers' Path) stretches for 3.8 kilometers between Perros-Guirec and the port of Ploumanac'h.

Rocky islets of the Sept-Îles archipelago and turquoise waters, a sea trip not far from our hotel in Perros-Guirec
Beyond the walls

The Sept-Îles bird sanctuary

Off the coast of Perros-Guirec, just a few minutes by boat from Castel Beau Site, the Sept-Îles archipelago is home to France's oldest bird sanctuary.

Pink granite Mean Ruz lighthouse overlooking the sea in Ploumanac'h, minutes from our hotel in Perros-Guirec
Beyond the walls

The Mean Ruz Lighthouse, a sentinel of pink granite

Built on a pink granite promontory at the entrance to the port of Ploumanac'h, the Mean Ruz lighthouse has been watching over the coast since 1948.