The purpose of this paper is not to present another review on the Fermat-Weber prob lem, but rather to focus on a very simple algorithm designed for solving it, suggested in 1937 by the 16 years old Hungarian mathematician Endre Vaszonyi Weiszfeld [51]. Quite interestingly, as indicated by Weiszfeld himself in [49], the focus of Weiszfeld’s paper was not to design an algorithm for solving problem (FW), but rather to prove a mathematical theorem, and in fact the all notion of an “algorithm” was unfamiliar to him, as he himself indicated in [49]: “the word algorithm was unknown to me and to most mathematicians”. The theorem itself was not new and was already established by Sturm in 1884 [46]. To understand the result Weiszfeld wished to show, let us first write down the expression of the gradient of the objective function of problem (FW):