  The purpose of this article is to study the role of Artin fans in tropical
and non-Archimedean geometry. Artin fans are logarithmic algebraic stacks that
can be described completely in terms of combinatorial objects, so called Kato
stacks, a stack-theoretic generalization of K. Kato's notion of a fan. Every
logarithmic algebraic stack admits a tautological strict morphism
$\phi_\mathcal{X}:\mathcal{X}\rightarrow\mathcal{A}_\mathcal{X}$ to an
associated Artin fan. The main result of this article is that, on the level of
underlying topological spaces, the natural functorial tropicalization map of
$\mathcal{X}$ is nothing but the non-Archimedean analytic map associated to
$\phi_\mathcal{X}$ by applying Thuillier's generic fiber functor. Using this
framework, we give a reinterpretation of the main result of
Abramovich-Caporaso-Payne identifying the moduli space of tropical curves with
the non-Archimedean skeleton of the corresponding algebraic moduli space.
