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The Capitol Visitor Center is closed for tours. All tours are cancelled. We regret any inconvenience this may cause you, and we look forward to welcoming you to the Capitol Visitor Center at a future date.

Exploration

Report on the U.S. and Mexican Boundary Survey, 1857-59, directed by William H. Emory, Vol. 1, Vol. 2: Parts 1 and 2, 1859

The Congress shall have Power To ... promote the Progress of Science

American exploration has been inspired by individual curiosity and boldness. It has also depended upon government encouragement and financial support. These documents highlight the role Congress has played in promoting scientific investigation and charting the unknown, from the early explorations across the continent to the latest voyages into space.