  A holographic dual description of inhomogeneous systems is discussed.
Notably, finite temperature results for the entanglement entropy in both the
rainbow chain and the SSD model are obtained holographically by choosing
appropriate foliations of the BTZ spacetime. Other inhomogeneous theories are
also discussed. The entanglement entropy results are verified numerically,
indicating that a wide variety of inhomogeneous field theory phenomenology can
be seen in different slicings of asymptotically $AdS_3$ spacetimes.
