I will present a study of the multi--wavelength signal induced by weakly
interacting massive particle (WIMP) annihilations at the Galactic Center.
Referring to a generic WIMP dark matter scenario and depending on
astrophysical inputs, I will discuss spectral and angular features and
sketch correlations among signals at different frequencies.
Data-sets at all energy bands, namely the radio, near infrared, X-ray and
gamma-ray bands, contribute to place significant constraints on the WIMP
The possibility of a dark matter discovery with the next generation of
gamma-ray telescopes, like GLAST and CTA, and with wide-field radio
observations, will be also briefly discussed.