The place you’re looking for is called Kamar-Taj.
In his quest to heal his injured hands, Stephen Strange seeks out Jonathan Pangborn, a spinal injury patient who has somehow regained the ability to walk.
This difficult-to-find basketball court appears to be at the Westway Sports & Fitness Centre in London, located under the A40 highway. Thanks to a user on Reddit for posting images of this location to aid in tracking it down.
MAP
[googlemaps https://www.google.com/maps/embed?pb=!1m17!1m12!1m3!1d2354.249845434027!2d-0.2198033290464435!3d51.51579822665096!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m2!1m1!2zNTHCsDMwJzU3LjAiTiAwwrAxMycwOS42Ilc!5e1!3m2!1sen!2sus!4v1734796366339!5m2!1sen!2sus&w=800&h=600](Doctor Strange, 2016)



