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.
Throughout the 19th century Congress promoted exploration of the American West. President Thomas Jefferson proposed, and Congress funded the first expedition: a “Corps of Discovery,” led by Meriwether Lewis and William Clark in 1803. Their mission was to chart the Louisiana Territory, find a water route to the Pacific Ocean, and establish trade with Indian nations. Traveling the Missouri and Columbia Rivers and partially overland to the Pacific, they acquired a wealth of information about the geography, geology, flora, fauna, and peoples of the Northwest.