A method of controlling a display apparatus including receiving, via a receiving unit, first metadata corresponding to contents to be displayed on the display apparatus from at least a first source externally connected to the display apparatus, said first metadata including channel information and broadcast programs to be broadcast for each channel included in the channel information; matching, via a controller thumbnail images with the broadcast programs; generating, via the controller, an enhanced program guide including a designated time zone indicating when a broadcast program is to be broadcast and a corresponding matched thumbnail image; and displaying via the display apparatus, the enhanced program guide based on a selection signal requesting the enhanced program guide be displayed.