Faro da Illa de Ons

Faro da Illa de Ons stands at the southern tip of Ons Island, part of the municipality of Bueu, guarding the entrance to the Ría de Pontevedra on the Galician coast. The island belongs to the Atlantic Islands of Galicia National Park, so the lighthouse sits within a protected landscape of cliffs, dunes and coastal walking trails.

How do you get there?

Ons has no bridge to the mainland, so a ferry is the only way in. The shortest route runs from Bueu, with a short crossing that drops passengers directly at the island's small harbour. From there, a marked footpath runs the length of the island toward its southern end, making the walk to the lighthouse the longest but most scenic stretch of any route on Ons. Ferry capacity is limited during the summer season, so booking a crossing in advance is worth doing.

Where does the lighthouse come from?

Construction was approved in December 1861, designed by engineer José Elduayen, and the light was first lit on 13 April 1865 as a fifth-order lighthouse with a range of up to 17 nautical miles, standing over 100 metres above sea level. The original lamp burned olive oil; it was replaced roughly thirteen years later by a single-wick paraffin lamp.

By the early 1900s the light was judged too weak, so in 1904 a heated vaporised-paraffin system was installed, but it still failed to deliver enough range. The solution came a couple of decades later: a new tower was built just a few metres from the original and inaugurated in 1926, fitted with a rotating optical apparatus and a pressurised paraffin-vapour system. The building was tiled in 1932 and remained one of the last pressurised-paraffin lighthouses in the region — it only switched to photovoltaic power in 1990. Today it operates fully automatically.

What will you see on site?

The tower itself is a modest, whitewashed structure typical of Galician lighthouses — functional rather than monumental, with its real draw being the setting around it. From the viewpoint by the lighthouse, the panorama opens onto the Atlantic on one side and the mouth of the Ría de Pontevedra on the other. On clear days you can also make out the Cíes Islands and the outline of mainland Galicia. The surrounding terrain is classic national-park landscape: low scrub, rocky cliffs and seabird colonies, since the Atlantic Islands are among the most important nesting sites on Spain's northern coast.

When is the best time to visit?

Summer offers the fullest ferry schedule, though the island's national-park status means visitor numbers are capped during peak months and some trails require booking ahead. Spring and early autumn are a solid middle ground — fewer crowds, still-reliable weather, and full sailing timetables. In winter, ferry services become sparse or irregular, which makes a day trip out to the lighthouse harder to plan.

Frequently Asked Questions

Can you go inside the lighthouse? No — it's an active, automated navigation light, so the tower interior is generally closed to visitors. The appeal is the site itself and the views around it.

How long does the walk from the harbour take? The path runs the full length of the island, so the one-way hike takes up a good part of a day — plan it as a full-day outing rather than a short stroll.

Are there shops or restaurants near the lighthouse? A small amount of tourist infrastructure exists near the harbour, but don't expect food or drink options near the lighthouse itself — bring water and supplies with you.

Is the light visible from the mainland at night? As an active navigation aid it shines regularly after dark, but given its distance from the coast it's mainly visible to ships and ferries passing through the Ría de Pontevedra area rather than from land.