Carved out of solid rock, the Treasury is an elegant, 2-story structure over 40 meters tall. Despite its name, it is believed to have been built at the beginning of the 1st century CE to serve as a royal tomb. The facade is ornate with Greek-style columns, triangular pediments, a rotunda topped by a symbolic funerary urn, and figures of Greek gods, all symbolizing the death of a hero. The interior consists of a porch flanked by two small rooms and a larger central hall. The structure was originally painted, and the plaza in front was originally four meters lower than its present level.
The first monument that comes into view at the end of the Siq.