Art / CIA HQ

Out­side CIA head­quar­ters, there's an instal­la­tion called "Kryp­tos," a large met­al sheet con­tain­ing a series of char­ac­ters that has per­plexed puz­zlers since it was unveiled 10 years ago. Today, the NYT reports that the artist mis­tak­en­ly omit­ted a char­ac­ter.