When people ask of things to do in Washington, D.C., you’ll hear all the same suggestions. It’s easy to forget how much Washington, D.C., actually offers! In a city chock full of attractions, restaurants, and experiences, many amazing sights fly under the radar, even to locals. If you’re looking for something different to do, check out these hidden gems in Washington, D.C.

1. Municipal Fish Market at The Wharf

The Southwest Waterfront is home to the Wharf and one of the oldest operating open-air fish markets. Visitors can enjoy the freshest seafood from the Municipal Fish Market (also known as Maine Avenue Fish Market) before relaxing on the scenic waterfront.

2. Rock Creek Park Horse Center

Most people know about Rock Creek Park, but what they don’t know about the park is that there are stables deep in the woods where you can take riding lessons, trail rides, or pony rides.

3. Spanish Steps

This peaceful urban oasis is so under the radar that many locals admit to never knowing about it! Built in the early 20th century, the Spanish Steps, nearby fountain, and surrounding area are perfect for a romantic stroll or quiet afternoon.

4. Hillwood Estate, Museum & Gardens

D.C. has a taste of Hollywood in this beautiful museum and garden. The former home of socialite Marjorie Merriweather Post, Hillwood offers a gorgeous garden and an art collection and is an excellent break from the crowds at the more traditional museums.

Check out this awesome video from @travelingtipps and get a sneak peek at the Hillwood Estate, Museum & Gardens:

5. Smithsonian's National Postal Museum

As museums go, the Smithsonian's National Postal Museum is not on the top list for people in D.C., but it should be. Mailboxes, advertisements, airmail, and a rich history of communication lies inside.

6. Summerhouse

The Summerhouse is a small hexagon-shaped brick structure on the West Front lawn of the U.S. Capitol Building. It was designed by Frederick Law Olmsted to provide a resting place and water for visitors. There is a central fountain that provides a calming atmosphere and beautiful views.

7. Albert Einstein Memorial

Hidden near the National Academy of Sciences, this unassuming bronze memorial is often forgotten among the larger memorials around it but no less fun to visit, especially for science lovers.

8. President Lincoln's Cottage

There’s lots of focus on Ford’s Theater and The White House, but in D.C. is President Lincoln’s Cottage, where he lived and developed the Emancipation Proclamation.

This destination is truly one of the best D.C. hidden gems. I love this video from @LincolnsCottage:

9. United States Naval Observatory

The United States Naval Observatory is home to the Master Clock, the official time of the Department of Defense, and is in charge of recording measurements for Earth’s orientation for the almanac and GPS satellites. The Vice President also lives on the grounds. Tours are hard to obtain, but when you get one, check out the spectacular view of the stars through their telescope.

10. The Spirit of Justice Park

Spirit of Justice Park is a hidden, child and dog-friendly gem atop a semi-underground parking garage. It's not listed on the Architect of the Capitol's website, spans two blocks, and has four entrances, but only one is marked. The park offers peace, quiet, and beautiful flowers.

11. Mansion on O Street

An eccentric old Victorian mansion now transformed into a luxury hotel, private club, and museum. The funky decor, hidden doors, and secret passages make this hidden gem a favorite of D.C. locals.

12. Dumbarton Oaks

Dumbarton Oaks is a historic estate in Georgetown that features beautiful gardens and serves as a research library and museum. It’s a fantastic place to stroll in springtime when flowers are blooming.

This video from @kuroshiocurrent really showcases Dumbarton Oaks' beauty.

13. The Exorcist Steps

Delightfully creepy, the infamous steps from the movie "The Exorcist" exist in Georgetown. Run up and down them a few times, and they’ll wear you out. But avoid them on Halloween.

14. The Technicolor Church

An old, abandoned church in Southwest D.C. had a technicolor makeover as part of an arts revitalization. Not many people stumble over it, but those who do never forget it.

15. Gravelly Point Park

Just outside of D.C., Gravelly Point Park is perfect for bikers, runners, and picnickers. If you time your visit right, you can watch the planes buzzing by as they land at nearby Ronald Reagan Airport.

Do you think these are the best hidden gems in Washington, D.C.? I love the vibe of The Technicolor Church - how about you? Let me know!

Are you still looking for even more lesser-known adventures in Washington, D.C.? Check out these 16 Things Everyone in D.C. Must Do Before They Die. And if you're planning to stay a night or two in The District, check out these fantastic vacation rentals!