I like this 'Screen-Wall' installation at 'LIQUID SPACES' exhibition by Ruth Ron:

This installation challenges the conventions of public and private spaces in a museum. The 'service' or 'private' parts of the museum, such as the archives, offices or the guard booth, which are traditionally closed to the public, become the subject of the display, reversing the relationship of 'watching' and 'being watched'. Influenced by the expending presence of surveillance in our daily life, we appropriate the panoptic gaze onto concealed parts of the museum to become the content of the exhibition display.

concept: The opaque solidity of physical architecture is challenged by multiple layers of the screen, the image of the wall and the transition to live video feed. The distance between remote spaces in the museum collapses, and digital and visual continuity is created. The network portal extends beyond the properties of the flat digital screen to become a reactive 'window' to unexpected places.  system: Parts of the gallery walls are replaced by small flat monitors. At first, the screens perform as mute, still images of their supporting walls. Once an observer draws near, the image transforms into a live video feed of a remote 'service' location of the museum, streaming via the internet.