Philadelphia’s Cira Centre, described in the posting The Cira Centre, 4/19/2011, was in the news recently when a Drexel engineering professor and some of his students turned it into a monitor for a giant Tetris game to kick off the Philly Tech Week. The windows were already lined with lights that display patterns at night, so it was a matter of programming them to respond to game controls in the form of dropping and rotating Tetris shapes. Our local TV news showed a crowd one night playing the game from the steps of the Art Museum.
Separate games were played on both sides of the building. The players were selected by lottery. Last year, the building was programmed to play Pong that set a Guinness World Record.
You can see a video of the display at http://www.slate.com/blogs/the_slatest/2014/04/06/cira_center_watch_a_giant_game_of_tetris_played_in_downtown_philadelphia.html which could set another Guinness World Record for the longest URL. The site also shows the Pong game from last year.