<p>At first glance, the grasslands of the Pampa biome may appear somewhat homogeneous. Nevertheless, they contain significant physical, ecological, and cultural wealth that are intricately connected in a complex relationship. However, since the 1950s, their spatial configuration has undergone significant changes due to the introduction of new land-use practices. Escalating this situation is the low rate of environmental protection and conservation in the biome. In this context, it is crucial to identify the different landscapes that compose the Pampa biome based on their physical and ecological characteristics. This article aims to determine whether the Pampa is homogeneous in its spatial extent by presenting the landscape units at the level of geocomplexes within the Pampa biome. These units were defined using the geosystem approach. Initially, a hierarchical framework of the Pampa biome landscape was established according to the taxo-chorological proposal. To identify the geocomplexes, multiresolution segmentation (GEOBIA) was applied based on topographic attributes to generate structurally similar objects. Physical-ecological information was then integrated into these objects. A total of 135 geocomplexes were identified, reflecting the biome’s complexity and diversity. The substantial number of these units demonstrates that the Pampa biome is not homogeneous but rather exhibits a rich array of attributes that distinguish the various geocomplexes. The landscape units provide a foundation for environmental and territorial planning. These plans must reflect the diverse realities that coexist within the Pampa biome to ensure that planning and protection measures are as effective as possible.</p>