Neanderthal remains and artifacts have been discovered in various archaeological sites, indicating their distribution and lifestyle:
\begin{itemize}
\item Lascaux Cave, France: Known for cave paintings, though Neanderthal presence is debated.
\item Altamira Cave, Spain: Famous for prehistoric art and possible artifacts.
\item Shanidar Cave, Iraq: Contains Neanderthal skeletal remains and evidence of burial practices.
\end{itemize}
These sites provide insight into the Neanderthal way of life and their evolutionary history.
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Final Answer:
\[
\boxed{\text{All of the above}}
\]