  The first part of the beam energy scan (BES) program at RHIC was successfully
completed in the years 2010 and 2011. First STAR results from particle yield
measurements are in good agreement with previously published data from SPS and
AGS experiments whereas other results like azimuthal HBT and $K/\pi$
event-by-event fluctuations differ at some energies. In addition, new
observations like the centrality dependence of chemical freeze-out parameters
($T_{\rm{ch}}$ and $\mu_{B}$) or the smoothly increasing difference with
decreasing energy in the elliptic flow $v_{2}$ between particles and
corresponding anti-particles, are discussed.
