Directions:

Freiburg im Breisgau has an old university where various chemists worked who were involved in elemental discoveries, notably the Nobel Laureate Hevesy who worked there intermittently on isotopes and radioactivity; he codiscovered hafnium with Coster {LINK to Copenhagen}.
RR Station, Bismarkallee - N47 59.84 E7 50.53.
Alte Universität, at the site of Universitätskirche/Jesuitenkirche, Bertoldstraße - N47 59.72E7 50.89.