Glendale__16x_.zip is a release file of the Minecraft resource pack Glendale [16x] [v3.1] [New 1.8 3D Objects!], made for Minecraft 1.5.1. It was published on April 20, 2013 and is 2.4 MB in size. For the full description, screenshots and every other version, visit the Glendale [16x] [v3.1] [New 1.8 3D Objects!] resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.