  In a groundbreaking experimental advance it was recently shown that by
stacking two sheets of graphene atop of each other at a twist angle close to
one of the so called "magic angles", an effective two-dimensional correlated
system emerges. In this system the kinetic energy of the low-energy electrons
is much reduced and consequently interactions become very relevant, providing a
new platform into the physics of two-dimensional correlated materials. Evidence
of a proposed Mott insulating as well as superconducting state in these highly
tunable systems has spurred much attention as they could pave the way to
understanding long-standing questions of high-$T_c$ superconductivity or
provide candidate systems for topological chiral superconductors; key to highly
relevant quantum technologies. Here, we demonstrate that twisted bilayer boron
nitride (TBBN) is an exciting and even richer alternative to twisted bilayer
graphene (TBG). Crucially, we show that in TBBN multiple flat bands emerge
without having to fine tuning close to a "magic angle" that upon doping lead to
correlated phases of matter (insulating and superconducting). TBBN could thus
be much less sensitive to small deviations in the twist angle and therefore
provide a particularly suited experimental platform to study correlation
physics in two dimensions. Furthermore, we find that in marked contrast to TBG
at small twist angle families of 2,4 and 6-fold degenerate, well separated,
bands emerge within the gap, considerably broadening the addressable physics.
