For an outdoor adventure, Theodore Roosevelt Island is a 91-acre natural preserve and memorial on the Potomac River, accessible by a pedestrian bridge from the Virginia side, offering miles of trails through wooded uplands and wetlands, birdwatching, and a central memorial plaza dedicated to the conservationist president, with free entry and great city views.
To honor those who have served in the military, consider visiting Arlington National Cemetery. It is the final resting place of more than 400,000 people, including President John F. Kennedy and Supreme Court Justice Thurgood Marshall. It is also home to the Tomb of the Unknown Soldier and several other memorials. It is free and open to the public every day.
If you want to shop, check out The Fashion Centre. This large, upscale indoor shopping mall is located directly above the Pentagon City Metro station, offering over 170 stores, restaurants, a food court, and a mix of popular and luxury retailers such as Nordstrom, Macy's, Apple, Coach, Zara, and more.
For art enthusiasts, consider visiting the Museum of Contemporary Art. The museum includes nine exhibition galleries, working studios for twelve artists, and three classrooms. At 17,000 square feet, the museum is one of the largest non-federal venues for contemporary art in the Washington metropolitan area.