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Laguna de Castillos
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Laguna de Castillos is a large, shallow freshwater lagoon located in the Rocha Department of Uruguay. Covering an area of about 80 square kilometers, it is renowned for its rich biodiversity and the surrounding Ombú forests and Butia palm groves of Castillos. The lagoon is fed primarily by several streams and connects to the Atlantic Ocean via the Valizas stream, which results in a brackish environment near its mouth. This ecosystem supports a wide variety of wildlife, particularly aquatic birds, making it a prime location for birdwatchers. Species like the black-necked swan and various herons are common here. The lagoon is part of the Laguna de Castillos National Park, created in 1966 to protect this unique wetland and its associated ecosystems. The nearby palm groves, a UNESCO World Heritage site, are one of the largest concentrations of the Butia palm in the world, adding to the region's ecological and scenic uniqueness.
- Location: Uruguay
- Nearby: Valizas (14 km)
Best time to visit & climate
The most pleasant time to visit is Jan, Mar, Dec.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 22 | 22 | 21 | 19 | 16 | 13 | 11 | 12 | 13 | 15 | 18 | 20 |
| Rain mm | 104 | 125 | 130 | 122 | 117 | 119 | 106 | 127 | 117 | 120 | 92 | 90 |
📋 Practical info
Getting there
The lagoon is easily accessed via Route 10 in the Rocha department, with several well-marked turnoffs leading directly to nature reserves or local ranches offering guided boat excursions.
Best season
Spring and autumn are considered fantastic times for birdwatching, as migratory flocks stop at the palm-fringed shores, offering pleasant temperatures and avoiding the intense summer heat.
Terrain & paths
Expect generally flat, grassy landscapes blending into marshy shorelines dotted with native ombú trees, making casual walking quite straightforward if you stay on the established farm tracks.
What to bring
Binoculars are an absolute must for observing the diverse birdlife, along with comfortable walking shoes, a light rain jacket for sudden coastal showers, and a reliable camera with a zoom lens.
Parking
Safe and spacious parking is typically provided at the entrances of the established private ecotourism ranches or designated natural park headquarters located just off the main highway.
Safety
Stick to the marked trails to avoid sinking into the soft marshland mud, respect the boundaries of private cattle ranches, and watch out for grazing livestock near the driving routes.
Time needed
Visitors typically spend roughly three to four hours walking the palm forest trails, stopping at the bird hides, and taking a short boat ride across the calm lagoon waters.
Geography
Facts
- The lagoon's surface area is approximately 80 square kilometers.
- Its average depth is around 1 meter.
- It connects to the ocean via the Arroyo Valizas stream.
- The Laguna de Castillos National Park was created in 1966.
- The surrounding palm groves are the largest congregations of the Butia palm.
- It is an important area for artisanal fishing, especially for catfish and tarpon.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
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© OpenStreetMap contributors · OpenRouteService
Sights in the town Laguna de Castillos (1)
Sights nearby
Frequently asked questions
What is Laguna de Castillos known for?
For its unique 'Ombú' forest on the shore.
How to visit the forest?
There are guided tours, as the forest is private or protected.
Are there picnic areas?
In the designated spots on the shore, this is possible.
Are insects a problem?
Yes, bring insect repellent, especially near the lagoon.
Best time of day?
Morning or late afternoon to avoid the heat.
Laguna de Castillos: where is it located?
Laguna de Castillos is located in Uruguay.
Laguna de Castillos: when is the best time to visit?
The most pleasant time to visit is Jan, Mar, Dec.
Laguna de Castillos: why is it worth visiting?
Laguna de Castillos is a large, shallow freshwater lagoon located in the Rocha Department of Uruguay.
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Nearby cities
Rocha
Rocha is the capital city of the RO department in Uruguay and the administrative center of the region.
Castillos
Castillos is an important city in the RO department of Uruguay, known for its role in the regional economy.
Lascano
Lascano is an important city in the RO department of Uruguay, known for its role in the regional economy.
Chuy
Chuy is an important city in the RO department of Uruguay, known for its role in the regional economy.
La Paloma
La Paloma is an important city in the RO department of Uruguay, known for its role in the regional economy.
La Pedrera
A chic seaside resort on a rocky peninsula, known for its excellent surfing conditions and winter whale watching.
Valizas
Valizas is a legendary bohemian coastal village, famous for its massive sand dunes and its simple, nature-oriented lifestyle.
Aguas Dulces
Aguas Dulces is a picturesque fishing village in Rocha, famous for its rustic beachfront houses and laid-back, bohemian vibe.
Punta del Diablo
A picturesque fishing village with colorful wooden cabins and a relaxed bohemian atmosphere on the wild Atlantic coast.
La Coronilla
La Coronilla is a peaceful seaside resort in Rocha, famous for its wide sandy beaches and sea turtle conservation efforts.
History & landmarks
Cabo Polonio Lighthouse
A historic lighthouse in the Cabo Polonio National Park, surrounded by a large sea lion colony.
Fortress of Santa Teresa
An impressive colonial fortress near the coast, surrounded by a large national park.
Fort of San Miguel
A historic military fort on the border with Brazil reflecting the colonial past.
Nature
More places
Laguna de Castillos Protected Area
Surrounded by a rare Ombu forest, this lagoon is a haven for numerous capybaras and water birds.
Cerro de la Buena Vista
A large sand dune offering a magnificent view over Cabo Polonio.
Cabo Polonio National Park (Sea Lions)
This coastal area hosts one of the world's largest colonies of sea lions in the wild.
Karumbé Sea Turtle Center
A conservation initiative at Cerro Verde that rescues and rehabilitates injured sea turtles.
Port of La Paloma
An Atlantic port used for fishing, timber exports, and maritime tourism.
Laguna de Rocha Bird Sanctuary
A shallow coastal lagoon serving as a crucial habitat for black-necked swans and flamingos.
Fortress of Santa Teresa
An impressive military fortress in the Rocha Department, started by the Portuguese in 1762.
Bañados del Este Wetlands
A vast swamp and lagoon system acting as a biosphere reserve protecting countless migratory birds.