This papercraft diorama is the Green Hill Zone, the first, and most famous, zone in all of the Sonic the Hedgehog video game series, the paper model was created by Sega Japan. The Green Hill Zone is a picturesque paradise with green forests, beautiful blue lakes, and brown checkered soil.
The checkers are meant to symbolize the checkered flag, which is an icon of racing culture. Green Hill has many flowers in the foreground, as well as waterfalls and clouds in the backdrop. Hazards include crumbling platforms and spikes. As with all the other levels in this game, Green Hill is located on South Island.
Green Hill's beta is thought to have been set at night and had a "Welcome Sonic" sign and a rolling ball. This ball eventually became Robotnik's wrecking ball in Act 3.
This zone is so famous in the Sonic series that it reappears in later games such as Sonic Generations, Sonic Battle, Sonic Adventure 2, and Super Smash Brothers Brawl. Even Sonic Advance 3's Sunset Hill Zone has a remix of Green Hill's music. After completing the game, Sonic makes a brief return to Green Hill for the ending sequence. [Source: Sonicretro]
You can download the papercraft model template here: Sonic the Hedgehog - Green Hill Zone Diorama Free Papercraft Download