Qasr Bint Far’un (Palace of the Pharaoh’s Daughter) is Petra’s oldest and most venerable temple complex. The name originates from a local legend that tells of a pharaoh who, after hiding his treasure in the urn of the Treasury, promised his daughter’s hand in marriage to the engineer capable of creating a system to supply water to the palace. Numerous water channels have been discovered near the site.

The Qasr al-Bint monument is almost square (27.90 m by 27.62 m) and stands on a podium, reaching a height of 23 m. As Petra's main temple, it exemplifies Hellenistic architecture, with only priests allowed inside while worshippers remained outside in the open temenos for rituals such as animal sacrifices. The temple is accessed via 26 marble steps, with a northern façade adorned by four stucco-covered Corinthian columns between pilasters. Inside, the rear sanctuary features three compartments: the central one houses an altar platform for the deity's images, flanked by two others with balcony terraces. The temple is believed to be dedicated to Dushara, the main Nabataean god.

The temple is dated to the first half of the 1st century AD, and it is possible that it was a pilgrimage destination.