  We present an explicit construction of ${\cal O}(10^{15})$ globally
consistent string compactifications that realize the exact chiral spectrum of
the Standard Model of particle physics with gauge coupling unification in the
context of F-theory. Utilizing the power of algebraic geometry, all global
consistency conditions can be reduced to a single criterion on the base of the
underlying elliptically fibered Calabi--Yau fourfolds. For toric bases, this
criterion only depends on an associated polytope and is satisfied for at least
${\cal O}(10^{15})$ bases, each of which defines a distinct compactification.
