  We study the quotients of n+1-dimensional anti-de Sitter space by
one-parameter subgroups of its isometry group SO(2,n) for general n. We
classify the different quotients up to conjugation by O(2,n). We find that the
majority of the classes exist for all n \geq 2. There are two special classes
which appear in higher dimensions: one for n \geq 3 and one for n \geq 4. The
description of the quotient in the majority of cases is thus a simple
generalisation of the AdS_3 quotients.
