The Smithsonian Institution is seeking offers through this Request for Proposals (RFP) for the for Revitalize Historic Core, Early Package 2-26 (EP 2-26) located at 1000 Jefferson Drive, SW, Washington, DC 20560. BACKGROUND The Smithsonian Institution Building (the Castle) designed by James Renwick Jr. was completed in 1855 to house all of the Smithsonian programs and operations. As each successive Secretary redefined the Smithsonian's mission and managed its growth, the Castle's interior spaces underwent many modifications. The Castle deserves special attention, not only because of its historic architectural and institutional significance, but also because it is the public's doorway to, and the symbol of, the Smithsonian Institution. The Smithsonian Institution Building, constructed of red Seneca stone, was listed by the Secretary of the Interior as a National Historic Landmark in 1965, and listed in the National Register of Historic Places in 1966. It is included within the National Mall Historic District. The project site is located on the National Mall, bounded by the Arts and Industries Building on the East, the Freer Gallery on the West, Independence Avenue and the Quadrangle Building and the Haupt Garden on the South and Jefferson Drive on the North. The National Mall, The Smithsonian Institution Building and the Arts and Industries Building are all listed on the National Register of Historic Places. An environmental impact statement ("EIS") consistent with the National Environmental Policy Act ("NEPA") was approved in concept as part of the South Mall Master Plan. The Smithsonian Institution intends to award one Firm Fixed Price Contract with an estimated cost more than $10 Million. This announcement is open to all businesses regardless of size. The North American Industry Classification Code (NAICS) for this procurement is 236220., size standard is $45 Million. This solicitation neither commits the Smithsonian Institution to pay any proposal preparation costs, nor obligates the Smithsonian Institution to procure or contract for construction, or any other services. It shall not be construed as authorization to proceed with or be reimbursed for any of the costs for any of the work specified herein. The Smithsonian Institution may cancel this RFP without prior notice. TOUR OF THE SITE: Offerors may attend a tour of site on Thursday May 23, 2024, between the hours of 8:00AM - 2:00PM. Please email Christine Grant at grantCA@si.edu to schedule. Offerors should decide to visit the site to familiarize themselves with the conditions as specified in the drawings and specifications. Offerors are encouraged to inspect the site prior to submitting a proposal, as information concerning the site may be useful in preparing offers. Failure to visit the site will not constitute a basis for a claim for change in or differing the site conditions, when visiting the site would have provided the Offeror an opportunity to compare the physical site against the drawings and specifications. QUESTIONS/CLARIFICATIONS: It is desired that all questions/clarifications be sent in on the attached excel spreadsheet, sequentially numbered for example first questions 1, 2, 3, second set of questions 4, 5, 6, etc. to grantCA@si.edu . It is requested that all questions be sent in by Thursday June 6, 2024, no later than 3PM EST. Proposals are to be submitted to DropBox.com by Tuesday, July 9, 2024 by 3:00PM.