  We find several classes of exact classical solutions of critical bosonic
string theory, constructed as twisted products of one Euclidean and one
Minkowskian 2D black hole coset. One class of these solutions leads (after
tensoring with free scalars and supersymmetrizing) to a rotating version of the
recently discovered exact black fivebrane. Another class represents a
one-parameter family of axisymmetric stationary four-dimensional targets with
horizons. Global properties and target duality of the 4D solutions are briefly
analyzed.
