Penmarch (French pronunciation: [pɛ̃maʁ], Breton: Penmarc'h) is a commune in the Finistère department of Brittany, northwestern France.

[4] There are many marshy lagoons, some of which have been drained and filled, especially in St. Guénolé to save space or habitat for the installation of local handicrafts.

Conq is connected to the shore by an artificial embankment itself protected by concrete blocks to better break the flood wave.

It is heavily moderated by the Atlantic Ocean and the Gulf Stream influence, resulting in cool summers and very mild winters for the latitude as seasonal differences are low.

Dorigen, the female protagonist in Geoffrey Chaucer's The Franklin's Tale, has a name similar to the local rock, which may symbolise her obduracy.