\documentclass{beamer}

\begin{document}

\begin{frame}
  \begin{itemize}
    \item  \textbf{Project 1}, Location
    \item  \textbf{Project 2}, {\small Location}
      \begin{itemize}
        \item item 1
        \item item 2
        \item item 3
        \item item 4
     \end{itemize}
  \end{itemize}
\end{frame}

\end{document}