Just east of the fountain house lie the miserable remains of a large square building with several rooms; the northern half lies under the Church of the Holy Apostles and the Southeast Temple (Early Roman) (Figs. 36, 37; see also Fig. 41). Originally built in ca. 400 B.C., the structure was used in the 3rd and 2nd centuries B.C. as the mint for bronze coinage. Dozens of bronze flans or unstruck coin blanks were found scattered throughout the building, along with evidence of industrial debris. There is nothing to suggest that Athenian silver coinage was minted in this building.