In this building sat the first Senate and the first House of Representatives of the United States of America. Herein George Washington was inaugurated President March 4, 1793 and closed his official career when herein, also John Adams was inaugurated the second President of the United States March 4, 1797.

See also...
Spudgun67 on Wikimedia Commons
Jez Nicholson on Flickr
Monceau on Flickr
Canadian2006 on Wikimedia Commons
Elliott Brown on Flickr