The Baltimore Hilton has done a great job of combining design with functionality in its meeting room signage. Rather than have rooms with names that have no meaning and generic art lining the hallways, the Hilton has utilized its art to tell the story of the person for whom the room is named.
Not only does it provide aesthetic enhancement, it also adds some knowledge and local flavor to an otherwise institutional space. In addition, when the room is not in use, instead of remaining blank, the electronic signs feature a Baltimore trivia fact (eg: Baltimore's Fort McHenry defended Baltimore Harbor during the War of 1812 and is the birthplace of the American National Anthem, penned by Francis Scott Key.)
Kudos to the Hilton staff for intentionally thinking about how the signs could serve double (triple?) duty for its visitors. How can your signage do more for you than just show the way?