Roberta Sessoli has been a pioneer in the field of molecular magnetism with the breakthrough discovery that a few paramagnetic metal ions in a molecule can behave like a magnet. These materials named as Single Molecule Magnets (SMMs), have opened a completely new field in nanomagnetism. More recently she has been working on the organization of SMMs on surface, a prerequisite to address the magnetic memory of single molecules. Other recent research interests concern the interplay between magnetism and chirality, as well as molecular spin systems with long spin coherence time of interest for quantum information technologies. She has received prestigious prizes such as the Distinguished Woman in Chemistry award from IUPAC and the Agilent Technologies Europhysics prize.