\begin{tikzpicture}
\tikzexternaldisable
\begin{axis}[3d box, width=9cm,height=9.25cm, minor z tick num=2,
xlabel=Amplitde,
ylabel=Mittelwert,
zlabel=Häufigkeit,
xtick=\empty,
ytick=\empty,
ztick=\empty]
\addplot3 graphics[points={%
(0.056377,1.635,0) => (202.5066,36.135)
(4.7634,1.6667,0) => (360.5972,95.6072)
(4.7465,-1.8814,0) => (232.6191,178.4166)
(0.31545,0.19947,88.5) => (159.5963,185.1919)
}]
{bilder/auswertung/3dcolumnchart.png};
\node at (axis cs:-1.5,0.5,490) [inner sep=0pt, pin={[pin edge={thick,black},align=left]145:Interesting\\Data Point}] {};
\end{axis}
\end{tikzpicture}