Washington Monument By reneecc Dec 8, 1783 The Proposal The Continental Congress proposes that a statue of George Washinton on a horse be built. Dec 12, 1799 George Washinton dies Dec 8, 1833 The Washington National Monument Society is formed The Society holds a design contest. Robert Mills wins. Dec 8, 1836 American-born architect Robert Mills wins the design contest sponsored by the Washinton National Monument Society. Jul 4, 1848 Work on the monument bgins. The cornerstone is laid on July 4th Dec 8, 1854 The Know-Nothings throw a memorial stone for the monument donated by Pope Pius IX into the Potomac River Dec 8, 1855 The Know Nothings seize control of the Washinton National Monument Society. Dec 8, 1861 Civil War breaks out, and work on the monument temporarily stops. Dec 8, 1879 Construction on the monument resumes. Aug 7, 1880 The monument's second cornerstone is laid Dec 6, 1884 The 3,300 pound marble capstone is placed on the monument Feb 21, 1885 The Monumnet's formal dedication is held Period: Dec 8, 1998 to Dec 8, 2000 The monument undergoes an extensive renovation Feb 11, 2002 A ceremony is held to celebrate the completion of the restoration and the 270th anniversary of George Washinton's birth