Great Falls Park
Under $25Watch the Potomac River crash over a series of cascades from three overlooks, then hike the cliffs above Mather Gorge.

Photo: Fuzheado, CC BY-SA 4.0, via Wikimedia Commons. Cropped and resized.
Glenstone is a museum in Potomac, MD, part of the Washington DC guide. Cost: free.
12100 Glen Rd · Potomac, MD
Glenstone is a contemporary art museum on a 230-acre campus in Potomac, founded by Mitchell and Emily Rales. You walk a path of about a third of a mile through landscaped grounds to reach the galleries, passing outdoor works by artists such as Jeff Koons, Richard Serra and Tony Smith. The Pavilions surround an 18,000-square-foot Water Court planted with waterlilies, irises and rushes. Admission is always free, but visits must be scheduled in advance.
The closest stops to Glenstone, ordered by straight-line distance. A few more like it, plus some different kinds of fun so you can build a full day.
Watch the Potomac River crash over a series of cascades from three overlooks, then hike the cliffs above Mather Gorge.
4.4 mi awaySwitch it up: Sport & Outdoor
Catch a summer concert at the open-air Filene Center or a children's show in the woods at the only national park for the performing arts.
8.6 mi awaySwitch it up: Theatre & Events
Hike, bike or ride wooded trails along Rock Creek through the city and stop at historic Peirce Mill.
13 mi awaySwitch it up: Sport & Outdoor
See Byzantine and Pre-Columbian art in a Georgetown mansion, then wander terraced gardens designed by Beatrix Farrand.
14 mi awayMore like this
Walk two huge hangars at Dulles Airport holding Space Shuttle Discovery, an SR-71 Blackbird and a Concorde.
15 mi awayMore like this
See Renoir's Luncheon of the Boating Party and the Rothko Room in a Dupont Circle house museum.
15 mi awayMore like this