What are some good books on geometry for the recreational reader?

The Shape Of Space   -Jeffrey Weeks [Editor: "Donald Weeks" in the original]
    Subtitled "how to visualize 3-manifolds" this is a fine example of
 advanced mathematics presented in an elementary manner.  It's also a
lot of fun.

Geometry And The Imagination -Hilbert and Cohn-Vossen
    A fine book co-authored by one of the all time greats.

Space Through The Ages  -Lanczos
    A historical approach to geometry, touching on many of the important
modern theories as well as their roots.

Flatland: A Romance Of Many Dimensions.  -E. A. Abbott
    A classic little fable of creatures that live in a plane, one of whom
is forced to struggle with the concept of 3-dimensional space.

The Fractal Geometry Of Nature. [ Editor: by Benoit B. Mandelbrot ]
    Explores the concept of fractional dimension.  Many pretty pictures.

Introduction to Geometry (variant title? but about geometry)
        by H. S. M. Coxeter:  The best antidote to high school
        geometry there is.  A remarkable treatment of the subject,
        using motions and transformations of the plane for most
        of the proofs and definitions.