  The cosmological models called $\alpha$-attractors provide an excellent fit
to the latest observational data. Their predictions $n_{s} = 1-2/N$ and $r =
12\alpha/N^{2}$ are very robust with respect to the modifications of the
inflaton potential. An intriguing interpretation of $\alpha$-attractors is
based on a geometric moduli space with a boundary: a Poincare disk model of a
hyperbolic geometry with the radius $\sqrt{3\alpha}$, beautifully represented
by the Escher's picture Circle Limit IV. In such models, the amplitude of the
gravitational waves is proportional to the square of the radius of the Poincare
disk.
