Multiple repair, stabilization, and restoration interventions are extending the useful life of this historically significant Greek Revival building. We have partnered with the National Park Service since 1990 to preserve this iconic National Historic Landmark on Wall Street in the heart of lower Manhattan. This remarkable 80,000 SF brick and marble memorial was built in 1842 to serve as the New York City Customs House and later the US Subtreasury. The structure and its three-story domed rotunda were progressively compromised and undermined by 160 years of urban growth, sustaining further damage from the collapse of the nearby World Trade Center Towers on September 11, 2001.
Our comprehensive restoration efforts included sensitive insertion of contemporary mechanical and electrical systems without damaging the building’s original fabric; renovation of exterior and interior marble masonry and windows; and repairs to the marble roof. We addressed the 9/11-related settlement problems with an ongoing monitoring system that allows our engineers to remotely oversee the building via computer. These proactive preservation efforts help ensure that this monument to liberty can continue to welcome and educate visitors from around the world.
- 80,000 SF renovation
- Secretary of the Interior Standards for Restoration
- National Register of Historic Places
Touchstone of History
Restoration interventions have helped preserve this iconic National Historic Landmark on Wall Street in the heart of lower Manhattan.Historic Preservation Modernization
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