Nineveh's current location is marked by excavations of five gates, parts of walls on four sides, and two large mounds: the hill of Kuyunjik and hill of Nabi Yunus (see map link in footnote).[16] A mosque atop Nabi Yunus was dedicated to the prophet Jonah and contained a shrine, which was revered by both Muslims and Christians as the site of Jonah's tomb.[17] The tomb was a popular pilgrimage site[18] and a symbol of unity to Jews, Christians, and Muslims across the Middle East.[18] On July 24, 2014, the Islamic State of Iraq and the Levant (ISIL) destroyed the mosque containing the tomb as part of a campaign to destroy religious sanctuaries it deemed to be idolatrous.[19][18] After Mosul was taken back from ISIL in January 2017, an ancient Assyrian palace built by Esarhaddon dating to around the first half of the 7th century BCE was discovered beneath the ruined mosque.[18][20] ISIL had plundered the palace of items to sell on the black market,[18][20] but some of the artifacts that were more difficult to transport still remained in place.[18][20]