Phare de Penfret

Penfret Lighthouse stands on the eastern tip of Penfret Island, at the edge of the Glénan archipelago, within the municipality of Fouesnant. It's one of the archipelago's most recognisable landmarks — a white, truncated pyramid-shaped tower topped with a red lantern room, clearly visible from the sea long before you land.

How do you get to Penfret?

There's no road or car ferry to the island — the only way in is by boat. During the season, small passenger boats (vedettes) run from Concarneau, Bénodet, Loctudy and Beg-Meil out to the Glénan archipelago. Once you step ashore, the lighthouse is hard to miss: it sits on the easternmost point of the island, inside the walls of a former fort. Bring sturdy shoes — the approach crosses uneven, rocky ground.

What will you actually see there?

The tower is built of stone in a truncated pyramid shape, painted white, with a red lantern section at the top. A technical building housing the old lighting equipment is attached to the base. The whole structure sits inside an old fort — a semi-buried military bastion whose walls ring the lighthouse. It's an unusual pairing: a working lighthouse enclosed within a defensive fortification, the result of a 19th-century compromise between the civil engineers in charge of coastal marking and the military, worked out so the fort wouldn't block the artillery's field of fire.

What's the history behind it?

Construction began in late 1836, to plans drawn up by engineer Charles Olivier Marie de Kermel, with the work carried out by contractor Louis Lavaurs of Quimper. The light was first lit on 1 October 1838, classified as a third-order light — strong enough to mark the eastern approach into the archipelago.

The fort surrounding the lighthouse went up in 1847, though its military role was short-lived: it was disarmed as early as 1873. In 1898, Penfret became one of the first French lighthouses fitted with a petroleum vapour incandescent burner, a major boost to the light's output. The station was automated on 30 April 1993, and has since been remotely monitored from the Concarneau subdivision, with no keeper living on site.

Given its historical and architectural value, the lighthouse-and-fort complex was listed as a historic monument on 31 December 2015, and upgraded to full classified status — France's highest heritage protection tier — on 20 April 2017.

When's the best time to visit?

Summer (June to September) is the easiest window: boat services to the Glénan islands run most frequently then, and sea conditions are generally more favourable for the crossing. Outside that period, sailings are sparser and depend heavily on the weather, so it's worth checking current schedules shortly before you travel. The autumn Journées du Patrimoine (Heritage Days) are also a good excuse to go, since the fort grounds around the lighthouse are sometimes opened up more widely to visitors then.

Frequently asked questions

Can you go inside the lighthouse? No — it's a working, remotely monitored station, so the tower itself isn't open to the public day-to-day. The surrounding fort grounds can be explored, especially during open-house events.

Does anyone live on Penfret? Not as a settled population — the light has run automatically since 1993, with no resident keeper.

How long is the boat trip to the Glénan islands? Crossing times vary by departure port and operator, so it's best to check current schedules directly with the local boat companies before you go.

Why is there a fort right next to the lighthouse? It comes from a 19th-century compromise between the authority responsible for coastal navigation markers and the military, who wanted to hold this strategic point at the archipelago's eastern edge — hence the unusual combination of a lighthouse and a semi-buried bastion sharing the same small footprint.