Unity Woods Yoga Center 4001 9th St N, Arlington, VA22203 Unity Woods Yoga Center in Ballston is an independent and locally owned studio. All the instructors are certified and…More highly trained in Iyengar. They aim to expand awareness and improve health by exploring the various aspects of the art of the Iyengar technique. The classes take place in a wide open space equipped with the necessary props and changing rooms. They offer classes at all levels: beginner, intermediate, advanced, and mixed-level and also welcome drop-ins. Visit their website for class schedules and rates.