For those of you who don’t like the Unity desktop environment, one of the alternatives is Gnome Shell. Unlike previous Ubuntu releases, Gnome Shell can be installed without breaking Unity, so you can have both installed on your computer.
Open the terminal and run:
sudo apt-get install gnome-shell
After the installation is complete, log out or restart the computer. At the login screen, click the gear icon and select Gnome.
Login as normal and you will see your new Gnome Shell desktop.