Featured
Stone Preservation
Watch our video on why stone preservation across Capitol Hill is a top priority.
More
Featured
Crumbling Down and Building Up
Addressing the stone pandemic takes a team of historic preservationists, structural engineers and stonemasons, among others.
More
Featured
Masonry at the AOC
The hands-on work caring for the stone founds across Capitol Hill falls to AOC masons.
More
Featured
Sandstone on Capitol Hill
During the early years of Washington, D.C., sandstone was commonly used because could be found locally and was easy to…
More

Stone Preservation on Capitol Hill

Overview of Stone Problem

Cannon Renewal

Conservatory Façade and Roof Restoration

Grant Memorial Restoration

Olmstead Terrace Preservation

Russell Exterior Envelope Project

Supreme Court Façade Restoration

Thurgood Marshall Façade Repair Program

U.S. Capitol Exterior Preservation