Is everything on the National Mall free?
The National Mall in Washington, D.C., is a public space and is free to visit. Many of the attractions around the Mall, like the Smithsonian museums and the National Gallery of Art, are also free of charge.
However, not everything on or around the National Mall is free. Some specific exhibits, events, tours, or pre-booking of free tickets might charge a fee. For example, a ticket to the Washington Monument is free, but if you book it in advance, which is recommended due to high demand, a $1 fee will be charged to cover reservation service. In addition, there are costs associated with parking, public transportation, dining, and shopping at or near the National Mall.
As policies and specific costs can change, it's always a good idea to check the official websites of the attractions for the most up-to-date information before planning your visit.