A transparent display apparatus disposed inside a vehicle is disclosed. the transparent display apparatus comprising: a transparent display panel configured to transmit light from a first surface to a second surface; a rotation part coupled to one end of the transparent display panel; an anchoring part fixed to a ceiling of the vehicle, wherein the anchoring part includes a motor coupled to at least a portion of the rotation part and configured to rotate the rotation part about a longitudinal direction of the rotation part; an interface unit mounted inside the transparent display panel and/or the vehicle to receive a user command; and a control unit operatively connected to the interface unit and the motor, and configured to perform control so that the transparent display panel is switched to a plurality of modes based on a user command received from the interface unit.