There are eight designs of tombs in Nabataean architecture. They are distinguished by the complexity of their carvings and whether they have columns, pediments or arches. The pattern on these three tombs along the Street of Facades is called Double Pylon. This monument type averages 17 feet across but can measure up to 50 feet wide. Notice their two rows of the crowstep motif. Over 80% of the burial monuments at Petra have some variation of this geometrical design.
