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Statue of Welsbach, corner of Boltzmanngasse 9 and Währingerstraße 38 (Chemisches Institut) - N48 13.21 E16 21.39
University of Vienna, Old Chemistry Bldg, where Welsbach discovered neodymium and praseodymium, Währingerstraße 10, Chemisches Institut - N48 12.97 E16 21.62
Old Town, a general district where Paracelsus used to wander, some old neighborhoods still exist, centered in the quadrant bounded by Franz-Josefs-Kai, Griessengasse, Rotenturmstrasse, and Hafnersteig; photographs mostly taken on Hafnersteig - N48 12.68 E16.22.62

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