In this tour, we explore the Pilar Nature Reserve, located in the northeastern part of Buenos Aires Province, Argentina. This protected area preserves a stretch of the Luján River and its associated environments, including wetlands, grasslands, and areas of tala forest, one of the characteristic native woodlands of the Pampas region. The reserve protects ecosystems linked to the Luján River, with floodplains, marshes, tall grasslands, and riparian forests that play a key role in conserving local biodiversity. During this field trip, we show: • Access to the reserve and entrance point • Trails crossing wetlands and grasslands • Walk along the banks of the Luján River • Environments visited: tala woodlands, riparian forests, marshes, and Pampas grasslands A recommended destination for those seeking nature experiences in northeastern Buenos Aires Province, exploring wetlands, grasslands, and tala forests in a protected area close to the city.