In 1884 he moved to Antwerp, where he established a company in the import of dried fruits and industrial fibers from the Belgian Congo.

The tradition of the Jewish community in his native Frankfurt was close to his heart, and he was annoyed at the way of life of Eastern European immigrants brought to Antwerp.

In the beginning there were approximately twenty members of his minyan, but soon, the number of worshipers burgeoned and it became quite clear that a new space was necessary.

As a result, Eisenmann decided to purchase a piece of land on Oostenstraat across the street from the railroad embankment.

Eisenmann chose Joseph De Lange as the architect,[3] who had recently graduated from the Royal Academy of Fine Arts.