Cabo Polonio is a tiny fishing village on a rocky point of Uruguay’s Atlantic coast, cut off from the road by kilometres of sand dunes. There are no streets and no mains electricity in the village, only a scatter of colourful cabins, a lighthouse from 1881 and one of the largest sea lion colonies in the region.

Cabo Polonio’s scattered buildings beside a broad bay
Small buildings and the rocky Atlantic shoreline at Cabo Polonio.
Photo: ApkXda

The cape lies in the department of Rocha, inside Cabo Polonio National Park. Only about 128 people lived there at the 2023 census, yet in summer the population swells with visitors who come for the beaches, the wildlife and the dark night skies.

How to get to Cabo Polonio

Low coastal houses beyond a rocky shoreline in hazy weather
Coastal houses among rocks and grass at Cabo Polonio. Photo: Montecruz Foto.

Private cars cannot drive to the village. The access terminal sits on Route 10 at about kilometre 264.5, where you park and board one of the authorised all-terrain trucks that cross the dunes to the cape, roughly 7 km away. Some visitors walk the route through the sand instead.

Rocha’s tourism office publishes the current entry and return schedule for the trucks. Day visitors should note the last departure back to the terminal. More background is on the destination information page.

Life without mains electricity

A brightly painted building and raised water tank at Cabo Polonio

Cabo Polonio has no power from the state grid, apart from the lighthouse. Guesthouses, the grocery store and homes rely on wind turbines, solar panels and generators, and drinking water comes from wells or rainwater. The village has no paved streets, just sandy paths between the houses.

In practice, power for lighting and charging can be limited, and facilities vary from one posada to the next. Ask your posada how it supplies power and hot water, pack a torch and bring luggage you can carry across the sand.

The lighthouse and the sea lions

Cabo Polonio lighthouse with a track leading through grass
The lighthouse and coastal settlement seen across wet sand
Cabo Polonio lighthouse silhouetted against a pink evening sky

The Cabo Polonio lighthouse was completed in 1881 on a coast notorious for wrecks. At least 18 vessels have been lost in these waters. The cape itself takes its name from José Poloní, the 25-year-old captain of the Spanish ship Nuestra Señora del Rosario, which ran aground here in 1753; all 316 men on board survived.

From the lighthouse you look out over Playa La Calavera and the Islas de Torres, three rocky islets offshore. The islands hold the largest sea lion population in the region and nearly half of Uruguay’s South American fur seals and sea lions, which breed and raise their young there. A stable colony also hauls out on the rocks right below the lighthouse.

Sea lion resting on a rock above blue water

Dunes, beaches and a national park

Houses, vehicles and a horse beside open grassland at Cabo Polonio
Small houses and fenced plots beneath a wide cloudy sky
A weathered wooden house among low coastal vegetation

The landscape around the village has been protected for a long time. It became a forest reserve in 1942 and a natural monument in 1966, joined UNESCO’s biosphere reserve programme in 1976 and was listed as a Ramsar wetland site in 1984. Since 2009 it has been part of Uruguay’s national protected-area system as Cabo Polonio National Park, covering 25,820 hectares of land and sea (see the protected-area information).

The park’s dunes are among the few mobile dune fields left in the region, some reaching 20 to 30 metres high. Between them lie sandy beaches, rocky headlands, native coastal forest and small wetlands. Two beaches frame the point: Playa Sur and Playa La Calavera. Southern right whales pass along the coast on their migration, and the Cerro de la Buena Vista, between Barra de Valizas and Cabo Polonio, gives a high view over the dunes.

Day trip or overnight stay

A raised water tank silhouetted above a roof at dusk
A lit house beneath the stars at Cabo Polonio

A day trip is enough to see the lighthouse, the sea lions and a beach walk. Staying overnight shows the village at its best: day visitors leave and the stars come out over the point. Rocha promotes its “dark skies” for stargazing, and Cabo Polonio, with almost no artificial light, is one of the best places to enjoy them.

Other activities include whale watching, sport fishing and horse riding. If remote communities interest you, read about Palmerston: Family History, Hospitality and Daily Life on a Cook Islands Atoll, or see our guide to enjoying time near the sea.

Sources

Photos: ApkXda; Montecruz Foto (1, 2); Daniel Mirrha (1, 2, 3, 4); Panoramio; Tamara Sancy; iAudioguide; Paulo Ramalho.