Stewards of the iconic buildings and grounds of Capitol Hill since 1793.

Featured

U.S. Capitol Dome was constructed with 8,909,200 pounds of ironwork bolted together in a masterpiece of American will and ingenuity.
The U.S. Capitol’s dome made of cast iron was designed by Thomas U. Walter and...

Featured

Snapshot of a crowd of people on a guided tour through the Rotunda of the U.S. Capitol
Official Tours of the U.S. Capitol Building are offered Monday through...

Featured

Painted portrait of Dr. William Thornton
The Architect of the Capitol (AOC) is the builder and steward of America’s...

Featured

City of Trees book cover artwork
Winter is the best time to appreciate the architecture of the historic trees...

History of Capitol Hill