  In recent years higher-dimensional black holes have attracted much interest
because of various developments in gravity and high energy physics. But whereas
higher-dimensional charged static (Tangherlini) and uncharged rotating
(Myers-Perry) black holes were found long ago, black hole solutions of
Einstein-Maxwell theory, are not yet known in closed form in more than 4
dimensions, when both electric charge and rotation are present. Here we
therefore study these solutions and those of Einstein-Maxwell-dilaton theory,
by using numerical and perturbative methods, and by exploiting the existence of
spacetime symmetries. The properties of these black holes reveal new
interesting features, not seen in D=4. For instance, unlike the D=4 Kerr-Newman
solution, they possess a non-constant gyromagnetic factor.
