RC_150516_RELEASE_1_1_MC_1_9_0 is a release file of the Minecraft map Radiant City Official, made for Minecraft 1.9. It was published on March 4, 2020 and is 31.4 MB in size. For the full description, screenshots and every other version, visit the Radiant City Official map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.