June 25, 2026 Events
The Great American State Fair – Opening Day

Lincoln Memorial Undercroft Opens – Public Access Begins
The undercroft is a brand-new immersive museum experience opening to the public for the first time on June 25, 2026.
Trust for the National Mall
This is a historic debut offering unprecedented access to the inner workings of one of America’s most iconic monuments.

What You’ll See
The undercroft features:

15,000 square feet of interactive exhibit space beneath the Lincoln Memorial
Floor-to-ceiling glass viewing revealing the impressive grid of concrete columns that structurally support the memorial
Immersive multimedia presentations exploring the memorial’s construction history and architectural engineering
Interactive exhibits highlighting the monument’s enduring significance in American history and culture
Visitors must complete a security screening to enter. Tickets are required and must be obtained in advance.