The phrase "wide opening" refers to a situation or area that has a lot of space or opportunity available. It means there is ample room for new possibilities or for multiple things to happen or be accommodated. Full definition
In contrast, the rooms upstairs shoot for wide open spaces. (haberarts.com)
Eyes wide open with wonder, I visited a few vendors and picked out a handful of different flower bundles. (wendyslookbook.com)
To do so, the fair was designed with wide open spaces, lounge areas and spacious booths that welcome viewers to enter and experience the art. (hamptonsarthub.com)