  TeV-scale extra dimensions may play an important role in electroweak or
supersymmetry breaking. We examine the phenomenology of such dimensions,
compactified on a sphere $S^n$, $n \geq 2$, and show that they possess distinct
features and signatures. For example, unlike flat toroidal manifolds, spheres
do not trivially allow fermion massless modes. Acceptable phenomenology then
generically leads to "non-universal" extra dimensions with "pole-localized"
4-$d$ fermions; the bosonic fields can be in the bulk. Due to spherical
symmetry, some Kaluza-Klein (KK) modes of bulk gauge fields are either stable
or extremely long-lived, depending on the graviton KK spectrum. Using precision
electroweak data, we constrain the lightest gauge field KK modes to lie above
$\simeq 4$ TeV. We show that some of these KK resonances are within the reach
of the LHC in several different production channels. The models we study can be
uniquely identified by their collider signatures.
