Visitors can tour many highlights on Capitol Hill without registering.


At the AOC we are leading the effort to conserve energy across Capitol Hill.


The Architect of the Capitol is responsible for the preservation and...


Cannon Renewal Project

The Cannon House Office Building has not received a comprehensive systems upgrade since the 1930s, and many of the building's systems are original – dating back to 1908 or earlier. These systems are past the end of their useful lives and the increasing risk of their failure jeopardizes the building's long-term functionality and safety. Other necessary work includes upgrading infrastructure systems and repairing the exterior stone façade.

Full project details are at aoc.gov/cannon.

Cannon Building
27 Independence Ave SE
20003 Washington , DC
United States
38° 53' 12.9912" N, 77° 0' 24.5376" W
District Of Columbia US

Capitol Exterior Preservation Project

This is 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 stone preservation work includes cleaning of the stone and pediment sculpture, replacement of the mortar and sealants at all of the stone joints, treatment of the carved stone and pediment sculpture, replacement of stone where elements are missing or cannot be repaired, and replacement of the bird deterrent systems. The project also includes preservation of the architectural metals.

Full project details are at aoc.gov/stone/capitol.

U.S. Capitol Building
South Extension (House Wing)
United States
38° 53' 19.5864" N, 77° 0' 32.724" W

Conservatory Façade and Roof Restoration

The U.S. Botanic Garden will remain fully open and accessible throughout construction. During construction, the stone façade will be fenced-in, but accessible paths around the Conservatory will remain open. Access to the National Garden will remain available through two entrances on Maryland Avenue SW and Independence Ave SW. Some of the restoration work could create noise, but will occur before the Conservatory opens and have minimal impact on visitors.

Full project details are at aoc.gov/projects/conservatory-facade-and-roof-restoration.

U.S. Botanic Garden Conservatory
United States
38° 53' 17.6748" N, 77° 0' 45.072" W

Rayburn Garage Interior Rehabilitation — Phase 2

The Rayburn Garage Interior Rehabilitation will replace structural concrete and waterproofing joints to extend the life of the garage for 50 years. The rehabilitation will also bring the garage levels up to code compliance for mechanical, electrical and fire protection systems.

Full project details are at aoc.gov/rayburn.

Rayburn House Office Building 22213 DC
United States
38° 53' 11.2344" N, 77° 0' 36.18" W
District Of Columbia US

Russell Exterior Envelope Project

The Architect of the Capitol, in conjunction with the Senate Committee on Rules and Administration, has developed a five-phase restoration project to preserve the exterior envelope of the century-old building, including its exterior stone, wood windows and glazed doors. The project also includes the rehabilitation of the balcony flooring, balusters, balustrades and roof chimney.

Full project details are at aoc.gov/stone/russell.

Russell Building
2 Constitution Ave NE
20002 Washington , DC
United States
38° 53' 34.1376" N, 77° 0' 24.66" W
District Of Columbia US

Senate Underground Garage and Landscape Restoration

The Architect of the Capitol is undertaking a multi-year project to renovate this area. The Senate Underground Garage and a large portion of Senate Park will remain inaccessible throughout the project, which is expected to be complete in early fall 2020.

Full project details are at aoc.gov/projects/senate-underground-garage-and-landscape-restoration.

United States
38° 53' 36.096" N, 77° 0' 33.192" W

Statue of Freedom Conservation Work

Scaffolding will surround the Statue of Freedom atop the United States Capitol dome while it undergoes cleaning, inspection, maintenance and conservation efforts. The project is expected to be completed by the end of the 2018 calendar year.

Full project details are at aoc.gov/projects/statue-freedom-conservation-work.

U.S. Capitol Building
East Capitol St NE & First St SE
Washington , DC
United States
38° 53' 23.3484" N, 77° 0' 32.652" W
District Of Columbia US

Thurgood Marshall Façade Repair Program

Project work includes the removal of the building's veneer and replacement of damaged stone panels on the building's façade.

Full project details are at aoc.gov/marshall.

Thurgood Marshall Garage Renovation

Project work includes repair of water infiltration problems, replacement of interior finishes, crack repairs, a new traffic surface topping, and upgrades to the lighting and sprinkler systems.

Full project details are at aoc.gov/marshall-garage.

Thurgood Marshall Federal Judiciary Building Washington , DC
United States
38° 53' 46.446" N, 77° 0' 15.372" W
District Of Columbia US

Ulysses S. Grant Memorial Restoration

The early stages of this work, beginning in March 2017, will necessitate blocking public access to the top tier of the north side of the plaza. This is in preparation for the larger continuing repair program to the memorial, which focuses is on repairing, cleaning and waterproofing the remaining stone portions of the memorial. Work includes replacing missing sections of balustrade, stone lamp bases and resetting marble pavers and steps on the upper plaza.

Full project details are at aoc.gov/grant.

Capitol Reflecting Pool 20016 Washington , DC
United States
38° 53' 24.2628" N, 77° 0' 46.512" W
District Of Columbia US