The Apple Park Visitor's Center is a demonstration of an accessible building when cost is no object. 1/?
Every exterior door has *motion-activated* auto-open triggers that can trigger on both wheelchair and foot height, placed away from the door. Usually the button (when it's working; often it's not) is mounted to the frame and is awkward to press from a wheelchair.
Extremely wide open spaces on the interior. There are no "alternate paths" for wheelchairs or assist devices. If you can walk there, you can roll there.