We report the infrared absorption and vibrational circular dichroism (VCD) spectral features of peptide beta-turns observed in small cyclic peptides dissolved in nonaqueous solvents. The molecules studied, cyclo-(Cys-Pro-Xxx-Cys), with Xxx = Gly, Phe, D-Phe, all form 14-member rings closed by a -S-S- linkage. The VCD spectra of these molecules vary enormously when the polarity and H-bonding ability of the solvent is varied. Furthermore, type I and type II beta-turns can be formed, depending on the chirality of the residue Xxx in the 3-position. VCD intensity calculations, based on standard type I and type II geometries, were carried out and found to agree well with the observed VCD spectra.