
- Free
- Smithsonian Institution Building (The Castle)
1000 Jefferson Drive SW
Washington, District of Columbia 20560
The Smithsonian Institution Building, known as the “Castle,” is pausing its first major renovation in more than 50 years to re-open for America's 250th birthday.
The Castle will reopen to the public from Memorial Day through Labor Day in 2026 and feature a visitor’s center, café, shop, and special exhibition. More details to come!

America’s Field Trip
The countdown is on — don’t miss this chance to visit one of America’s most iconic historic sites!
This contest invites students in grades 3–12 to share their perspectives on what America means to them and earn a trip to the iconic landmarks that bring America’s story to life. Field trip opportunities range from Yellowstone National Park to newly added trips like Boston and New York City. Don’t wait — the deadline is April 16!