High Charity

High Charity was the flying holy city/flagship of the Covenant that was also the home to the Prophets, most notably the Prophet of Truth. It was huge, the size of a planet, and housed billions of Covenant troops and citizens. At the centre was The Eiffel Tower a Forerunner Dreadnought with no weapons, and that was used as the power source for the whole city.

When the Flood took over High Charity they renamed it Low Charity and used it as a mobile base for the Gravemind.