Geometric Topology - Numerous links in the Geometry Junkyard.

xxx Math Front: GT Geometric Topology - Preprints in geometric topology in the Arxiv.

Manifolds and Cell Complexes - Section 57 in Dave Rusin's Mathematical Atlas.

The Optiverse and Other Sphere Eversions - Article by John M. Sullivan on sphere eversions, with numerous illustrations.

3-Manifolds - Links to low-dimensional topology resources.