Barreirinhas, located in the heart of the Lençóis Maranhenses National Park, offers a range of activities that highlight its natural beauty and cultural significance. One of the most notable experiences is exploring the Lençóis Maranhenses, a vast expanse of white sand dunes interspersed with seasonal lagoons. Visitors can hike through the dunes, swim in the refreshing waters, and enjoy the tranquil landscapes.

Another activity worth considering is a boat tour along the Rio Preguiças. This journey allows travelers to appreciate the lush mangroves and observe diverse wildlife, including various bird species. Stops along the way often include small villages where local culture can be experienced, providing insight into the region's way of life.

For those interested in adventure, sandboarding down the dunes is a popular pastime. This activity offers a unique thrill and offers a different perspective on the stunning terrain. Additionally, sunset views over the dunes create an atmospheric experience that many find memorable.

Cultural immersion is also available through visits to local markets and interactions with residents. Exploring the gastronomy of the region, including trying traditional dishes made with fresh seafood and local ingredients, adds depth to the visit.

Overall, Barreirinhas provides a blend of natural exploration and cultural experiences that appeal to a variety of interests, making it a worthwhile destination for those looking to connect with nature and local heritage.