New University (Neue Universitat)
What the experts agree on
Heidelberg's historic university center features a striking medieval courtyard anchored by the 1380 Hexenturm (Witches' Tower), where accused witches were imprisoned—a dark reminder of the university's ancient past.
“The most historic facilities of Ruprecht-Karls-Universität are around Universitätsplatz.”
– Lonely Planet
"The inner courtyard contains a medieval tower from 1380, the Hexenturm (Witches' Tower). Suspected witches were locked up there in the Middle Ages. " Full review