The particular drawing on the pediment of the gate, with two overlapping triangles and Latin inscriptions, recapitulates the title page in the posthumous 1677 edition—which differed from the title page of the first edition—of the alchemical book Aureum Saeculum Redivivum (1621) by Adrian von Mynsicht (known also as Madathanus). In 1747 the emblem was used by Wienner von Sonnenfels in his Splendor lucis, oder Glanz des Lichts. Similarly, the lower part of the emblem by von Mynsicht depicting a "centrum in trigono centri", was reproduced in a manuscript called the Geheime Figuren der Rosencreutzer (1785–88). The same drawing appear in a bookmark possessed by Bérenger Saunière, a parish priest at Rennes-le-Château in 1885.
It is suggested as well that the geometrical construction of the gate is similar to that of the 21st emblem of Michael Maier’s Atalanta Fugiens (1617).