Soak Up Spectacular Views at the Great Falls Overlooks. Visitors at an overlook in Great Falls Park. NPS. All NPS. Potomac River at Great Falls Park. NPS. USA.gov. Just 15 miles from the Nation's Capital, Great Falls Park provides an abundance of outdoor activies. Explore the park through binoculars or a camera lens and get around by foot, boat, climbing or horseback! During the warmer months, remember not to leave your pet unattended in a car. Temperatures in closed vehicles can be fatal to pets. Soak Up Spectacular Views at the Great Falls Overlooks (U.S. National Park Service)