Open onto
Definition 1 of 1
Pro Tip 1/3Spatial Connection
Used when an opening or door creates a direct pathway to another space or outdoors. 
The dining area opens onto a small courtyard.
Pro Tip 2/3Direct Access
Implies that there is no obstacle or intermediate space between the two areas. 
The studio's double doors open onto the sunny patio.
Pro Tip 3/3Visual Extension
Suggests that the view or space visually continues from one area to another. 
Wide windows in the kitchen open onto the lush garden.