Prof. Jerzy Jankowski passed away on 18th of August, 2020 and this paper brings back this outstanding scientist, one of the most influential geophysicists in Poland and an extraordinary man. Considered a prime architect in the development of the geomagnetic observations in Poland, Prof. Jankowski was a giant in geophysics covering a wide range of problems, from the cognition of the deep basement in Poland and Central Europe to the studies of earthquake precursors. Besides research Prof. Jankowski also offered his administrative services to the Institute of Geophysics of the Polish Academy of Sciences, among others being its director for more than 30 years and also to the Polish Academy of Sciences as the Head of the Division of Earth and Mining Sciences for nearly a decade.  Prof. Jankowski  received many significant honors during his life; internationally, he was recognized as a foreign member of the Finnish Academy of Science and Letters and Hungarian Academy of Sciences.

Jerzy Jankowski; geophysics; geomagnetism; magnetotellurics; magnetic observatories