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

Featured

The Cannon House Office Building, completed in 1908, is the oldest congressional office building as well as a significant example of the Beaux Arts style of architecture.
The Cannon House Office Building, completed in 1908, is the oldest...

Featured

The Summerhouse on the Capitol Grounds surrounded by pink azalea flowers.
A few ideas to help you in planning a visit to Capitol Hill.

Featured

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

Featured

East Front Plaza Repairs
AOC is making repairs to expansion joints on the East Front Plaza of the...