  One of the key issues in unraveling the mystery of high Tc superconductivity
in the cuprates is to understand the normal state outside the superconducting
dome. Here we perform scanning tunneling microscopy and spectroscopy
measurements on a heavily overdoped, non-superconducting (Bi,Pb)2Sr2CuO6+x
cuprate. Spectroscopic imaging reveals dispersive quasiparticle interferences
and the Fourier transforms uncover the evolution of momentum space topology.
More interestingly, we observe nanoscale patches of static charge order with
sqrt(2)*sqrt(2) periodicity. Both the dispersive quasiparticle interference and
static charge order can be qualitatively explained by theoretical calculations,
which reveal the unique electronic structure of strongly overdoped cuprate.
