Section of the Treasury of Atreus
Peculiar vaulted buildings often existed in connection with the palaces for the preservation of valuables; the base of these treasure-houses is circular, and their covering of a dome shape; it does not, however, form an arch, but courses of stones are laid horizontally over one another in such a way that each course projects beyond the one blow it. till the space at the highest course becomes so narrow that a single stone covers it. Of all those that have been preserved till the present day, the treasure-house of Atreus at Mycenæ is the most remarkable.
A. Rosengarten, W. Collett-Sandars A Handbook of Architectural Styles (New York, NY: Charles Scribner's Sons, 1895)
Courtesy the private collection of Roy Winkelman