This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
Requiem was the main settlement on Hima in the 32nd century. Hovering above it was the building housing the Mercantile. A walkway connected this building to a towering structure which lead to Requiem proper.
In 3188, Michael Burnham visited Requiem when she was looking for a way to connect with her ship, the USS Discovery. She was escorted into the settlement by Cleveland Booker. (DIS: "That Hope Is You, Part 1")