A Nabataean temple on the north side of the colonnaded street, named for the winged-lion column capitals found here during American excavations in the 1970s. Probably dedicated to a goddess — perhaps al-Uzza, the Nabataean equivalent of Aphrodite.
What survives is mostly foundation: stairs up from the colonnaded street, a podium, traces of an interior with side rooms. The site was destroyed by the earthquake of 363 AD and never reoccupied. The good capitals are in the Petra Museum and the Jordan Museum in Amman; here you get the platform and the view.