Due to a special event taking place in the U.S. Capitol on Thursday, September 18, there will be no tours of the U.S. Capitol that day until approximately noon. The Capitol Visitor Center will remain open during this time, and guided tours in the Capitol Visitor Center will be available.
Congress played an active role during the Civil War (1861–1865) through legislation, appropriations, and oversight. In 1861, Congress encouraged development of the ironclad warship the U.S.S. Monitor. Designed by Swedish-American engineer John Ericsson, it was tested in an epic encounter with the Merrimac, a Union ship the Confederates had captured, fitted with iron armor, and renamed the C.S.S. Virginia. Their March 9, 1862 battle at Hampton Roads, Virginia—the world’s first between steam-powered ironclads—revolutionized naval warfare.