  We develop a structure theory for RCD spaces with curvature bounded above in
Alexandrov sense. In particular, we show that any such space is a topological
manifold with boundary whose interior is equal to the set of regular points.
Further the set of regular points is a smooth manifold and is geodesically
convex. Around regular points there are DC coordinates and the distance is
induced by a continuous BV Riemannian metric.
