Check out the notable monuments and enjoy the top-notch restaurants in this historical area while you're sightseeing. Those who've visited Washington love its shops, local art scene, and museums. Some popular places to visit include White House, Capital One Arena, and Smithsonian Institution. These are some of the parks and outdoorsy places: McPherson Square, Lafayette Square, and United States Botanic Garden. You'll find these family-friendly attractions: National Museum of Natural History, National Air and Space Museum, and Washington Harbour.