The Finder in macOS Sierra offers four ways to view items in a window: as a list, in columns, or in Cover Flow view. To choose a view, use the View buttons at the top of the Finder window.
In the icon view, each file or folder is represented by an icon (such as the Mac desktop). List view shows details about a file or folder, including its attributes.
Column view provides a visual trail of where you’ve been, and displays a hierarchical view of where a file is stored. Cover Flow is a modified list view that displays a thumbnail view of a file’s contents.