Complex sentence: Peru had its first sites inscribed on the list at the 7th Session of the World Heritage Committee, held in Florence, Italy in 1983: "City of Cuzco" and the "Historic Sanctuary of Machu Picchu".
Split into simpler sentences: Peru had its first sites inscribed on the list at 7th Session of the World Heritage Committee, held in Florence, Italy in 1983. At that session, two sites were listed: "City of Cuzco" and the "Historic Sanctuary of Machu Picchu".