After five decades of research dedicated to cementing the central role of hippocampus in spatial memory, cortical regions became the centre of attention in the XXI century. One of the key structures that draws growing interest is the retrosplenial cortex. Retrosplenial area undergoes experience-dependent plasticity during spatial learning, a process manifested by patterned and cell-specific expression of immediate early genes. It sends projection to deep layers of medial entorhinal cortex where it converges with the hippocampal output and gets integrated into the spatial processing circuit. In my talk I will present evidence suggesting a complementary role of retrosplenial cortex and hippocampus in the process of memory formation.