Aigüestortes I Estany of Saint Maurici National Park
About
Aigüestortes i Estany de Sant Maurici National Park is a spectacular mountain sanctuary in the Spanish Pyrenees, covering 141 km² of rugged peaks, glacial lakes, and limestone cliffs. Named for its winding streams and the iconic Sant Maurici lake, the park offers a mosaic of ecosystems ranging from lower‑montane forests in the early spring to alpine meadows and rocky summits in the summer. It is famed for its incredible biodiversity, with species such as the Pyrenean chamois, brown bear and golden eagle, as well as over 200 bird species. Hiking and trekking form the core of visitor experience, with well‑marked trails that take guests to the crystal‑clear lakes, dramatic viewpoints, and a network of mountain refuges that allow overnight stays. Visitor access is free, but overnight stays in refuges require advance booking. The park’s information centres in Boí and Espot provide maps, guides, and exhibits that illuminate the region’s natural history and cultural heritage. The park’s trail system is one of the most diverse in the Pyrenees, ranging from easy day walks around the Sant Maurici lake to long‑distance routes such as the GR‑11 trans‑Pyrenean path. For those interested in rock climbing, back‑country skiing or snowshoeing, certain routes are opened seasonally, with clear regulations to protect the fragile alpine environment. Whether you’re a seasoned mountaineer, a nature lover looking for rare wildlife sightings, or a family searching for a safe and educational adventure, Aigüestortes offers a memorable experience amidst some of Spain’s most untouched landscapes.
Highlights
- Sant Maurici Lake
- Besiberri Sud Peak
- Aigüestortes Plain
- Trillium of Lletres
- Wildlife Hotspots
Must-See Areas
Good to Know
Good for
Best time to visit
The park’s best period for hiking and wildlife spotting is from late spring through early autumn, especially June to September when the trails are dry and the alpine lakes shine bright. The weather remains mild from late spring to early fall, but temperatures rise above 10 °C and views of the high peaks are at their most dramatic during this window. --- The winter months (December to March) are for enthusiasts of snowshoeing, cross‑country skiing or a quiet, snow‑drifted retreat in the park’s isolated refuges. --- We recommend booking overnight stays at the park’s mountain refuges well in advance, especially during peak hiking season.
At a glance
- Typical visit: about 3 hours