Take a walk around the National Mall and explore the Monuments.
Entry is free but you do need to book entry in advance through the website.
Entry is free but you need to reserve passes in advance on their website.
Unfortunately not one of the free art museums but so cool. Buy tickets in advance.
Great for kids. Buy tickets in advance.
About an hour outside of DC but makes for a really fun day trip.
Walk along the waterfront at the Warf and explore the shops and restaurants.
Rent kayaks, canoes or SUP and enjoy the views of DC from the water.
Hike along the Potomac River on the Billy Goat Trail. Be sure to take a look at the map and decide which section you want to hike.