  This survey paper is divided into two parts. In the first (section 2), I give
a brief account of the structure of classical relativity theory. In the second
(section 3), I discuss three special topics: (i) the status of the relative
simultaneity relation in the context of Minkowski spacetime; (ii) the
"geometrized" version of Newtonian gravitation theory (also known as
Newton-Cartan theory); and (iii) the possibility of recovering the global
geometric structure of spacetime from its "causal structure".
