We study the long-time behavior of solutions for damped nonlinear hyperbolic
equations in the unbounded domains. It is proved that under the natural assumptions these
equations possess the locally compact attractors which may have the infinite Hausdorff and
fractal dimension. That is why we obtain the upper and lower bounds for the Kolmogorov's
entropy of these attractors.
Moreover, we study the particular cases of these equations where the attractors occurred
to be finite dimensional. For such particular cases we establish that the attractors consist
of finite collections of finite dimensional unstable manifolds and every solution stabilizes to
one of the finite number of equilibria points.