  Twisted bilayer graphene (TBLG) subject to a sequence of commensurate
external periodic potentials reveals the formation of moir\'{e} fractals (MF)
that share striking similarities with the central place theory (CPT) of
economic geography, thus uncovering a remarkable connection between twistronics
and the geometry of economic zones. MFs arise from the self-similarity of the
emergent hierarchy of Brillouin zones (BZ), forming a nested subband structure
within the bandwidth of the original moir\'{e} bands. We derive the fractal
generators (FG) for TBLG under these external potentials and explore their
impact on the hierarchy of the BZ edges and the wavefunctions at the Dirac
point. By examining realistic super-moir\'{e} structures (SMS) and
demonstrating their equivalence to MFs with periodic perturbations under
specific conditions, we establish MFs as a general description for such
systems. Furthermore, we uncover parallels between the modification of the BZ
hierarchy and magnetic BZ formation in Hofstadter's butterfly (HB), allowing us
to construct an incommensurability measure for MFs \textit{vs.} twist angle.
The resulting bandstructure hierarchy bolsters correlation effects, pushing
more bands within the same energy window for both commensurate and
incommensurate TBLG.
