Great Pyramid of Ghis
It was destroyed by the Valyrian Freehold during the fifth and final war between the Freehold and the Empire. The Valyrians marched on the city and obliterated it. Only the colossal ruins of the pyramid remain. It is now the haunt of bats and spiders.
A Dance with Dragons
In the Great Pyramid of Meereen, just before he begins his long descent alone to meet Skahaz mo Kandaq, Ser Barristan Selmy recalls that it had been built as an echo to the Great Pyramid of Ghis. He also remembers that Lomas Longstrider had once visited its colossal ruins.