Kendall Square, Cambridge, USA (MIT neighborhood) has something like this, but it's not good.

The space was originally a beloved "public roof garden" which I believe was done as a real estate developer concession to the city. The landscaping itself was whatever, but it was a nice escape from the industrial university campus neighborhood. Get away from your university or industry lab, at any time of day or night, and go up above the commotion, to more sunlight or a view of the stars, with a friend.

Then Google wanted to expand their office space. IIUC, there was a very strange city committee approval, without a quorum, by a single person, who stepped down afterwards.

Much of the public roof garden space was taken. And what remains was remodeled into a nano-Googleplex style grounds party deck, outside their windows. And surveillance cameras, and security guards who often make their presence known.

But it's still technically open to the public. (Challenge: From Broadway, try to spot the signage for it, in a great moment of visual design low-contrast white-on-light-pink signage, amidst larger bold high-contrast color decorations. Even if I tell you it's in a recessed corner beside a parking garage, and you have the benefit of StreetView rather than walking along the sidewalk, and I even tell you what color to look for, you'll have trouble. Under normal conditions, you'd have no idea the public access concession was even there, which presumably was the task given to the designer who must hate that this is what their career has come to.)

And when it's not locked, you can go up there, and get a lookout view of some of the city, while being under the evil eye yourself, and constantly feel like you should leave, which you soon do.