A significant element along the northeast edge of the Frederick Law Olmsted designed Delaware Park, the Pan-American Building (Buffalo & Erie County Historical Society) is the only remaining structure from the 1901 Pan-American Exposition and is a National Historic Landmark. For Phase I of this project, HHL Architects developed a Master Plan for the museum which assessed the impact of the requirements for additional space and evaluated several options to meet those requirements.

Following our completion of the Master Plan, HHL executed renovations to the Pan-American Building, including auditorium, elevator, and accessibility alterations, tile roof replacement, portico restoration and reconstruction, and restoration of the monumental marble stair and retaining wall. Phase II was the renovation of the Julia Boyer Reinstein Center, right next to the museum. This was an abandoned music studio and residential building that is now used for administration, exhibit construction, and seminar spaces. Phase III was the redesign of the Resource Center, which is now a space that makes the extensive collection more accessible to the public. The 75,000 sq. ft. structure, originally an 1898 trolley maintenance building, has been adapted to meet up-to-date museum curatorial standards.