Smithsonian Museums in Washington, D.C.: What to See

One of the absolute highlights in D.C. is exploring the incredible collection of Smithsonian Museums. The nation’s capital is not just the political heart of the United States, it’s also a cultural and educational epicenter, thanks in large part to the sprawling Smithsonian Institution. From awe-inspiring space shuttles to powerful portraits of American heroes, these museums offer something for everyone—whether you're a history buff, an art enthusiast, a science nerd, or traveling with kids.

But before you dive into the vast world of Washington Museums, it’s a smart idea to plan ahead—especially when it comes to your bags. Hauling luggage around the National Mall is not ideal, especially when you’re trying to marvel at a moon rock or take in delicate works of art.

Enter Nannybag luggage lockers, the modern traveler’s secret weapon. Imagine this: you arrive in Washington DC before hotel check-in, or you’re catching a late train or flight after checkout. Instead of lugging your bags around from the Museum of Natural History to the Air and Space Museum, you simply drop them at a secure, 24/7-access location nearby.

Nannybag DC luggage storage partners with local shops and hotels to offer convenient, budget-friendly luggage storage for just around 4.50 euros per bag—no matter the size. What sets Nannybag apart is its flexibility: free cancellations, €10,000 insurance per bag, and round-the-clock customer service. It’s not just affordable, it’s peace of mind—so you can stroll the National Mall, snap photos at the White House, or grab a bite near Nationals Park without dragging your suitcase along.

Is the Smithsonian Free?

Absolutely! One of the most incredible facts about the Smithsonian Institution is that it’s entirely free to enter. That’s right—Smithsonian Museums are funded by the U.S. government and open to the public at no cost. Whether you’re diving into the history of flight at the Space Museum or standing face-to-face with a Tyrannosaurus rex at the National Museum of Natural History, you won’t need to open your wallet.

The Smithsonian is a collection of 21 museums, galleries, gardens, and a zoo—19 of which are located in Washington DC, mostly along the iconic National Mall. This makes the Smithsonian the largest museum complex in the United States, attracting large numbers of curious visitors each year.

What to See: Highlights of the Smithsonian

With so many options, it’s easy to feel overwhelmed by what to see. To make your visit a little easier, here are some must-see Smithsonian Museums and exhibits.

National Museum of American History

This museum in Washington DC brings the story of the United States to life. From the top hat worn by Abraham Lincoln to the original Star-Spangled Banner, the American History Museum showcases everything from the American Civil War to the 20th century to the present day. Learn how pop culture, politics, and innovation have shaped American history and culture.

National Air and Space Museum

Few places inspire wonder quite like the Air and Space Museum. It houses legendary aircraft like the Wright brothers' Flyer, Charles Lindbergh's Spirit of St. Louis, and even real spacecraft used in the Apollo missions. Perfect for all ages, this space museum offers flight simulators and hands-on exhibits that explore everything from aviation to planetary science.

National Museum of Natural History

Dinosaurs, mummies, rare gems, and butterflies—oh my! The Museum of Natural History is one of the most beloved museums on the Mall. Marvel at a 52-foot-long model of a North Atlantic Right Whale or come face-to-face with ancient fossils in the dinosaur hall. For fans of the earth and its creatures, it’s a Washington must-see.

National Museum of the American Indian

This powerful museum explores the history, culture, and contemporary lives of Native American peoples from across the Americas. With exhibits that span everything from indigenous art to current tribal issues, it’s both educational and moving. The building’s unique architecture and its traditional Native foods café also make this a standout destination.

National Museum of African American History and Culture

Since its opening in 2016, the African American History Museum has become one of the most popular stops in the city. Through powerful exhibitions, visitors learn about slavery, segregation, the American civil war, and civil rights leaders like Martin Luther King Jr, as well as celebrate the achievements of African Americans in sports, music, politics, and the arts.

Smithsonian Institution Building ("The Castle")

Known affectionately as “The Castle,” this red sandstone building serves as the Smithsonian’s information hub. Located at the center of the National Mall, it’s a great place to start your journey and pick up brochures, get directions, or learn about daily events and tours. The architecture itself is worth a visit, and it’s often less crowded than the more famous museums.

Hirshhorn Museum and Sculpture Garden

For modern and contemporary works of art, the Hirshhorn is a must. With bold installations, cutting-edge video art, and a gorgeous outdoor sculpture garden, this museum is a vibrant part of the Smithsonian’s art family. It’s a great stop for anyone interested in 20th and 21st-century creativity.

National Gallery of Art

Though technically not part of the Smithsonian Institution, the National Gallery of Art is located right on the Mall and is just as stunning. It houses an impressive Art Museum Art Gallery experience with masterpieces from Leonardo da Vinci to Jackson Pollock. The Sculpture Garden next door is a wonderful place for a rest or a picnic.

Tips for Exploring the Smithsonian

Start early: Museums open around 10 a.m. and can get crowded quickly, especially during spring and summer tourist seasons. 

Use DC luggage storage options like Nannybag if you're in between accommodations or arriving/leaving the city mid-day. 

Bring snacks and water: While food is available at some museums, options are limited and can be pricey. 

Check for timed entries: Some museums, like the African American History Museum and the Air and Space Museum, may require free timed-entry passes due to high demand. 

Consider museum fatigue: There are more museums than you can do in a day—plan for 2 to 3 at most, and mix art with science or history for variety.

Beyond the Smithsonian: More Washington Must-Sees

Once you’ve conquered the core of the Smithsonian world, don’t forget to explore other historic landmarks around Washington DC. Take a photo in front of the White House, or catch a baseball game at Nationals Park. Visit the breathtaking Library of Congress, where some of the country’s rarest documents are preserved. Walk the steps of the Lincoln Memorial or explore the Vietnam Veterans Memorial for a more contemplative moment in your journey through American history.

Don’t miss the Martin Luther King Jr. Memorial, a powerful tribute to the civil rights leader, or the towering Washington Monument offering panoramic views of the entire city. If you're arriving from York City or traveling onwards, know that many of these iconic locations are easily walkable or accessible by metro.