Major Projects

The United States Botanic Garden (USBG) and Architect of the Capitol has updated the Children's Garden in the USBG Conservatory.

The U.S. Capitol Visitor Center redesigned Exhibition Hall. Visitors can now encounter a dynamic and educational environment that will inform, involve and inspire them about Congress' role in the democratic process.

The United States Botanic Garden (USBG) and Architect of the Capitol (AOC) has restored the deteriorating stone façade and roof of the historic USBG Conservatory.

The Architect of the Capitol (AOC) completed a Long Term Strategic Energy Plan for the Capitol Power Plant (CPP), which identified cogeneration as the preferred solution for achieving energy savings, reducing environmental impacts, and maintaining a reliable source of chilled water and steam for Congress and the Supreme Court.

The Russell Building is the oldest of the three Senate office buildings. In FY 2023, the AOC successfully completed the Russell Exterior Envelope Project, a multiyear restoration project to preserve and repair the exterior envelope of the century-old building.

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.

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.

The four clouds were lowered to the ground and fully assessed to ensure their structural integrity, including analysis against seismic design considerations. This project was completed in 2016.

The Ulysses S. Grant Memorial is regularly maintained to keep it in good condition.

As part of this project, completed in 2015, the AOC also installed a 148 kW photovoltaic system on the Hart Senate Office Building roof. The solar panels will decrease utility use, increase sustainability and make the building eligible for an energy credit program which will further reduce electrical costs.

In 2017 the Architect of the Capitol completed a long-term conservation effort to restore the murals of the Brumidi Corridors on the first floor of the U.S. Capitol's Senate wing.

This multi-year project completely restored the Dome for the first time since 1959-1960.

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

The Architect of the Capitol (AOC) has completed construction related to the 2025 Inaugural Ceremonies.