  This contribution presents a brief summary of the recent past efforts to
experimentally explore the QCD phase diagram at high baryon chemical potentials
through heavy-ion collisions. A few measurements are highlighted to present the
current status in the search for a first-order phase transition, for a possible
critical endpoint, and for evidence of chiral symmetry restoration. Finally,
the outlook for the ongoing beam energy scan II program and future experiments
at the FAIR complex are discussed.
