A beautiful area in the Potomac River Gorge. The cliffs are about 60 feet high and made of hard, solid rock. The area is sunny and has lots of climbers and hikers. This is a major top rope climbing area with trees being the anchor norm.
If you want a guidebook for great falls check out the PATC website and pick up a copy of A Climber's Guide to the Great Falls of the Potomac. If all else fails the VA/WV/MD Climbers guide by Horst is also a great guidebook for the area.
It's about 20 minutes up stream, and west of Washington DC in Great Falls National Park.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Great Falls: