  A Muon Collider poses a number of challenging problems in the lattice design
- low beta-star, small circumference, large physical and dynamic aperture -
which must be solved in order to realize the unique opportunities it offers for
the high-energy physics. This contribution presents basic solutions which make
it possible to achieve the goals for both the energy frontier collider and the
Higgs factory with Nb3Sn magnet parameters.
