Double Europe.zip is a release file of the Minecraft map Double Europe World, made for Minecraft 1.16.3, 1.16.1, 1.16, 1.16.4, 1.16.2. It was published on December 5, 2020 and is 24.1 MB in size. For the full description, screenshots and every other version, visit the Double Europe World map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.