Search for extra spatial dimensions and TeV scale quantum gravity at LEP-2

A number of measurements which probe the experimental consequences of extra spatial dimensions and TeV scale quantum gravity are accessible at the LEP-2 electron-positron collider. Preliminary results on the following processes, performed with the ALEPH detector at center of mass energies around 200 GeV, are presented: 1. search for direct graviton production in the reaction e+e−→γG; and, 2. search for effects due to virtual graviton exchange in the reactions e+e−→γγ and fermion-anti-fermion pairs.