Images from winning poster prizes at the ACA and ECM 2009 annual meetings. Clockwise from top right: Topological Analysis of Vanadium Borides from High Resolution Single-crystal Diffraction Data (Bürgehan Terlan), Structural Studies of Ebolavirus VP35 (Christopher Kimberlin), Crystal Chemistry of the Divalent Cations in Solid-state Synthesized Fillowite-type Phosphates (Mélanie Rondeux), Hydrogen-bond Patterns in the 1,3,6-ciclohexanopentol (Paulo Carvalho), New Crystal Forms of the Antibiotic 4-aminosalicylic Acid (Vânia Mafalda de Oliveira André), Application of Automated Diffraction Tomography to Structural Solution of Inorganic Phases: Charoite (Enrico Mugnaioli), A New Sc MOF Built up from Octadecasil Zeolitic Cages as Heterogeneous Catalyst (Felipe Gandara), and New Crystal Forms of the Antibiotic 4-aminosalicylic Acid (Vânia Mafalda de Oliveira André).