Perched atop the Moqattam Cliffs, where Pharaonic slaves cut limestone for the pyramids, the Monastery of Saint Simon and its accompanying cathedral boast a commanding view of Cairo. On a smog free day, if you peek around the cliffs to the south, you can see clear to the Great Pyramids of Giza. Looking west, you have a fine view of more recent history; you can almost throw a rock at the Citadel of Salah Ed-Din or into the endless expanse of tombs that make up el-Arafa—the City of the Dead. On the western horizon, the Cairo Tower stands apart from the deceptively modern skyline of downtown. Right below your feet, largely invisible to the outside world, you'll find Izbet Az-Zabaleen. The Garbage City, as it's known in English, is a hive of entrepreneurial recyclers called zabaleen, literally "garbage people," nestled at the edge of Manshiet Nasser, a teeming slum on Cairo's eastern outskirts.