  Topological properties lie at the heart of many fascinating phenomena in
solid state systems such as quantum Hall systems or Chern insulators. The
topology can be captured by the distribution of Berry curvature, which
describes the geometry of the eigenstates across the Brillouin zone. Employing
fermionic ultracold atoms in a hexagonal optical lattice, we generate
topological bands using resonant driving and show a full momentum-resolved
measurement of the ensuing Berry curvature. Our results pave the way to explore
intriguing phases of matter with interactions in topological band structures.
