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Ayers's Legacy
Each Architect of the Capitol helped shape the iconic buildings and grounds we know today.
Capitol Dome
The U.S. Capitol’s dome made of cast iron was designed by Thomas U. Walter and constructed from 1856-1866 at the total cost of $1,047,291.
Cannon House Office Building
The Cannon House Office Building (constructed beginning in 1905 and completed in 1908) is the oldest congressional office building and a significant example of the Beaux Arts style of architecture.