Lots of opportunity for something like this on the ben franklin parkway in philly. The views might be impressive but the pedestrian experience is pretty awful. 6 lanes of traffic in the center and 4 outer lanes makes a really stressful crossing, especially during times of heavy usage when people are treating it like a highway. There are also parts closer to the art museum that lack adequate crossings and folks are left needing to sprint across in front of incoming traffic. To be fair there have been some improvements made over the last few years but it could be so much better.
https://www.visitphilly.com/things-t...nklin-parkway/
https://en.wikipedia.org/wiki/Benjamin_Franklin_Parkway