\begin{tikzpicture}[node/.style={rounded corners=2pt, draw}]
\node[node] (nuernberg) {Nürnberg};
\node[node, below right=0.5cm of nuernberg] (feucht) {Feucht};
\node[node, below left=0.7cm and -0.3cm of nuernberg] (wendelstein) {Wendelstein};
\draw[edge, path, cycle] (nuernberg) -- (wendelstein);
\draw[edge, cycle] (nuernberg) -- (feucht);
\draw[edge, cycle] (wendelstein) -- (feucht);
\node[node, below left=0.4 and -0.4cm of wendelstein] (schwanstetten) {Schwanstetten};
\draw[edge] (wendelstein) -- (schwanstetten);
\node[node, below right=0.1cm and 0.6cm of schwanstetten] (postbauerHeng) {Postbauer Heng};
\draw[edge, path] (wendelstein) -- (postbauerHeng);
\draw[edge] (feucht) -- (postbauerHeng);
\node[node, align=center, below right=-0.3cm and 0.6cm of postbauerHeng] (neumarkt) {Neumarkt i. d. \\ Oberpfalz};
\draw[edge] (wendelstein) -- (neumarkt);
\draw[edge] (feucht) -- (neumarkt);
\draw[edge] (postbauerHeng) -- (neumarkt);
\node[node, below=1.5cm of schwanstetten] (greding) {Greding};
\draw[edge, blocked] (schwanstetten) -- (greding);
\node[node, below right=1 and -1.5cm of postbauerHeng] (beilngries) {Beilngries};
\draw[edge, path, blocked] (postbauerHeng) -- (beilngries);
\draw[edge, blocked] (neumarkt) -- (beilngries);
\node[node, below left=of beilngries] (ingolstadt) {Ingolstadt};
\draw[edge, path] (beilngries) -- (ingolstadt);
\draw[edge] (greding) -- (ingolstadt);
\node[node, below right=of beilngries] (kelheim) {Kelheim};
\draw[edge] (beilngries) -- (kelheim);
\node[node, below right=of ingolstadt] (muenchen) {München};
\draw[edge] (kelheim) -- (muenchen);
\draw[edge, path] (ingolstadt) -- (muenchen);
\end{tikzpicture}