WASHINGTON, DC - JUNE 25: Visitors pose for a photo on a replica of former U.S. President Abraham Lincoln's chair at the Lincoln Memorial Undercroft during the grand opening on June 25, 2026 in Washington, DC. The new 15,000-square-foot exhibit showcases the massive concrete foundations that support the memorial while telling the story of how the Lincoln Memorial was designed and built. (Photo by Al Drago/Getty Images)