Due to a special Joint Meeting of Congress taking place in the Capitol on Wednesday, April 29, the U.S. Capitol will be closed to tours until approximately 12:30 p.m. on that day. The Capitol Visitor Center will remain open throughout the day, 8:30 a.m. to 4:30 p.m., and guided tours of the Capitol Visitor Center will be available while the Capitol is closed.
Throughout the 19th century Congress funded expeditions to explore land and sea. In 1836 Congress authorized the United States Exploring Expedition—also called the Wilkes Expedition after its leader, naval officer Charles Wilkes. Its purpose was to circumnavigate the world, promote commerce, and "extend the bounds of science and ... Knowledge." The four-year expedition mapped South Sea islands and Pacific coastlines, established trade, and gathered voluminous information that aided the United States in becoming a leading scientific and naval power.