Major Projects

Stone preservation is a top priority for the Architect of the Capitol (AOC) as nearly every building is enveloped in stone and all have problems.

When the Architect of the Capitol (AOC) does not receive enough funding to pay for all maintenance and repairs required across the U.S. Capitol campus, work gets deferred due to budget constraints.

The preservation of heritage assets on the U.S. Capitol campus is one of the Architect of the Capitol's (AOC) core functions.

Work to stabilize façade elements at the Thurgood Marshall Federal Judiciary Building has begun.

This two-phase project will replace the 85-year-old copper roof of the Library of Congress' John Adams Building.

A multi-year program ensuring hearing rooms on the Capitol campus have reliable features to support Congress' legislative duties.

The Architect of the Capitol's (AOC) commitment to sustainability is demonstrated through our robust energy conservation and sustainability programs.

This project will create a stand-alone structure nestled into the landscape that will serve as the new screening area prior to entering the House Wing (south entrance) of the U.S. Capitol.

Many of the historic buildings under the Architect of the Capitol’s (AOC) care were constructed before the establishment of current accessibility standards and require upgrades to provide reasonable accommodations for individuals with disabilities.

The Cannon Renewal Project provides an effective workplace for the next century to serve the needs of the U.S. House of Representatives and support Congressional operations.

Restoring areas of the U.S. Capitol to represent an appropriate period as determined by the curatorial community.

To properly restore the Olmsted Terrace, a six-phased project is underway by the Architect of the Capitol (AOC) to repair the masonry at the terrace walls.

A multi-phased project designed to address deferred maintenance, extend the life expectancy of the deteriorated stone and to replace missing elements of the U.S. Capitol Building.

The United States Botanic Garden (USBG) and Architect of the Capitol (AOC) have made improvements to provide a safe and accessible route from Bartholdi Park to the American Veterans Disabled for Life Memorial and upgrade the aging infrastructure of the historic Park.

This restoration project entailed cleaning, repairing and restoring the Vermont marble of the cheek walls on either side of west steps, and the north, south and east façades of the Supreme Court Building.