Washington, D.C. is the capital of the United States and holds historical significance. While the city is known for its famous monuments, museums, and historical sites, there are also some lesser-known tourist spots waiting to be explored. Here are some interesting but less-known places in Washington, D.C.:

1. Dumbarton Oaks Garden and Library: Located in the Georgetown area, this beautiful garden includes a historically rich library and an art gallery.
2. Renwick Gallery: Affiliated with the Smithsonian, this gallery is filled with modern and contemporary artworks and is often less crowded.
3. The Exorcist Steps: These stairs in Georgetown are the location where scenes from the famous horror film "The Exorcist" were filmed.
4. Hillwood Estate, Museum & Gardens: The former residence of Marjorie Merriweather Post, this estate is known for its art collection and beautiful gardens.
5. Meridian Hill Park: This park offers a peaceful area with various sculptures, waterfalls, and a historic fountain.
6. National Arboretum: This extensive botanical garden is famous for its rare plant species and the Bonsai Collection.
7. Old Stone House: Located in Georgetown, this historic home is known as the oldest stone house in America.
8. Blind Whino SW Arts Club: Known as the Colorful Church, this art gallery and event space hosts creative and entertaining events.

These places offer interesting options for visitors looking to gain a different perspective on Washington, D.C. and explore lesser-known historical and cultural points. Before visiting, make sure to check if the places are open and comply with any visiting conditions.