Among Petra's marvels are the Obelisk Tomb and Bab el-Siq Triclinium, two remarkable rock-cut structures that offer insights into the Nabataean culture and its blend of indigenous traditions with external influences. The Obelisk Tomb and Bab el-Siq Triclinium, two distinct rock-cut structures carved into the sandstone cliffs, are positioned one above the other. The upper monument, known as the ""Obelisk Tomb,"" features four elongated pyramids symbolizing Nefesh, Nabataean symbols representing the deceased, with a central niche behind it holding a worn sculpture of a cloaked male figure, representing the tomb's patriarch, overseeing five burial niches beneath.

Below the tomb, a gabled façade indicates the location of a triclinium, a dining hall where funerary banquets were held in honor of gods or ancestors. Across from the triclinium, an ancient inscription in Nabataean and Greek commemorates a burial monument erected by 'Abdmanku, son of Akayus, son of Shullay, for himself and for his children and their heirs during the time of Maliku (AD 40–70). This reflects Petra's cosmopolitan nature, influenced by Hellenic culture.