Saint-Pol-de-Léon (French pronunciation: [sɛ̃ pɔl də leɔ̃]; Breton: Kastell-Paol) is a commune in the Finistère department in Brittany in north-western France, located on the coast.

It was also the scene of a battle during the Breton War of Succession, where the Montfortists and their English allies defeated an army led by Charles of Blois.

Battle of St Pol de Léon As of the 6th century, the monastery site became an episcopate named "Kastell Paol".

Scattered over 13 kilometres of coast line, some of the beaches, creeks and strands of St Pol de Léon have names of pieces of poetry : "Tahiti", le "Petit-Nice", "Sainte-Anne"...

The walker discovers them from the panoramic viewpoint of the "Champ de la Rive" municipal park, which is overhung by a mission cross erected in 1901.

All along the coast, a footpath will give you a unique view on the changing Channel, the Bloscon deep harbour of Roscoff, the Callot island with its chapel near Carantec.

The "Groue" is the sediment strand which links the coast to the Sainte Anne island, forming the bay of Pempoul with its ashore harbour.