We have performed scanning tunneling spectroscopy (STS) investigations on clean metallic uranium epitaxially grown on the (110) surface of a tungsten single crystal at room temperature. This system is known to exhibit an hcp phase with the band structure close to the Fermi level dominated by 5f states. The STS spectra are found to be in good agreement with the results of relativistic band structure calculations based on the local density approximation. The calculated density of states of the Uranium film indicates that the features in the STS spectra are related to 5f-states.