White House Cornerstone Was Placed into Position in 1792 Events Oct 132018 White House White House Cornerstone was placed into position in 1792. Completed in 1800, the White House contains more than one hundred rooms. Children could learn more at: White House. Leave a Reply Cancel reply Your Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Name (required) E-mail (required) URI Notify me of follow-up comments by email. Notify me of new posts by email.