Opening grip (8)
I believe the answer is:
entrance
I believe this is a double definition.
'opening' is the first definition.
(opening leading to a building)
'grip' is the second definition.
(grip can mean to fascinate or entrance)
(Other definitions for entrance that I've seen before include "Fill with wonder, door" , "Right of admission" , "Hold" , "Send" , "Capture" .)