Nature in Chascomus, Buenos Aires, Buenos Aires
Chascomus Lagoon
The Laguna de Chascomus is one of the largest lakes in Buenos Aires Province and a popular destination for fishing, windsurfing, and birdwatching. The charming historic town of Chascomus on its shores has beautiful colonial architecture and a pleasant lakeside promenade.
Laguna de Chascomús is one of the most significant lakes in Buenos Aires Province, a shallow, reed-fringed expanse of water covering approximately 3,000 hectares on the edge of the Pampa Deprimida — the vast wetland region south of Buenos Aires. The lagoon and its associated system form part of the Encadenadas del Sur, a chain of interconnected lakes stretching southwest across the province.
The historic town of Chascomús, established in 1779 as a frontier fort against indigenous raids, sits directly on the lagoon's northeastern shore. The town centre is exceptionally well-preserved, with a handsome central plaza, the Basílica Catedral, and a broad costanera (lakeside promenade) running along the waterfront. The promenade is the social heart of the town, lined with restaurants, ice cream shops, and benches looking out across the open water.
The lagoon is famous throughout Buenos Aires Province for its pejerrey fishing — the silver perch of the Pampas wetlands is considered among the finest freshwater table fish in Argentina and attracts anglers year-round. Boats for hire and fishing licences are available at the lakeside. Beyond fishing, the lagoon supports excellent birdwatching: flamingos, herons, ducks, and coots populate the reed beds, and the wider Encadenadas system is an important stopover for migratory species.
Water sports are well established here: kayak and paddleboard rental, windsurfing, and sailing are all available along the waterfront. Visitors can also hire bicycles and cycle the costanera circuit. The town's historic district, within walking distance of the shore, contains the Museo Pampeano — a regional history and natural science museum set in a colonial building on the plaza — and one of the oldest chapels in the province.
Chascomús lies 120 kilometres south of Buenos Aires, reachable in under two hours by car or bus from the Retiro terminal. A half-day covers the costanera, the historic plaza, and a boat trip on the lagoon; a full day allows time for cycling, fishing, and a museum visit. Spring and summer mornings offer the best conditions for water sports and bird observation.
Hours: Always open
Best time: morning
Best for: nature lovers, fishing, families
Location
Chascomus, Buenos Aires Province
-35.5771, -58.0109 — View on map
Highlights
- Laguna de Chascomús: 3,000-hectare lake famous for pejerrey fishing and flamingo-rich birdwatching
- Costanera lakeside promenade with restaurants, views across the water, and kayak hire
- Well-preserved colonial town centre with Basílica Catedral and the historic Plaza Independencia
- Museo Pampeano: regional history and natural science museum in a colonial building on the main square
- Gateway to the Encadenadas del Sur, a chain of interconnected Pampa wetland lakes
Tips
- Rent a kayak on the lagoon
- The town has a lovely historic district worth exploring
- A fishing licence is required for pejerrey — purchase one at the lakeside tackle shops before heading out
FAQ
What is Laguna de Chascomús best known for?
The lagoon is most celebrated for its pejerrey fishing, widely regarded as some of the finest freshwater angling in Buenos Aires Province. It is also a significant birdwatching site, with flamingos, herons, and migratory species present in the reed-bed margins throughout the year.
How far is Chascomús from Buenos Aires and how do visitors get there?
Chascomús lies approximately 120 kilometres south of Buenos Aires — about a 90-minute drive or a two-hour bus journey from the Retiro terminal. Regular bus services operate daily throughout the year.
Is photography allowed on the lagoon?
Photography is freely permitted throughout the public areas of the lagoon and town. The reed beds and flamingo colonies at the southern end of the lagoon offer particularly rewarding wildlife photography in the early morning light.
Accessibility
The costanera lakeside promenade is paved and flat, making it accessible for wheelchair users and those with mobility limitations. The historic town centre is generally level, though some older buildings have steps. Boats for hire typically involve boarding from low jetties where uneven surfaces may present difficulty.
When to visit
Spring (September–November) offers the best combination of pleasant temperatures, high flamingo counts, and active pejerrey fishing. Early mornings throughout the year provide calm water for kayaking and the best conditions for birdwatching along the reed beds.