A pop-up card includes an erectable pop-up display structure that can be easily removed from the card to be displayed. The pop-up card is foldable between closed and opened positions. The card includes a slot therein for holding the pop-up display structure. The pop-up display structure comprises a plurality of intersecting slice-form elements mounted on a foldable base. At least a portion of the foldable base is removably inserted in the slot such that when the card is closed, the foldable base is folded and the pop-up display structure is in a flattened state. When the card is opened, the foldable base is unfolded and the pop-up display structure is in an erected 3-D state. The pop-up display structure can be slid out of the slot in the card and displayed when desired.