The Wayspot needs to be in a location where someone can stand at the wayspot safely, and for an extended period. It’s not enough to be able to, say, touch the wayspot while there’s a red light and then quickly walk away before the light turns green.
I always say that you need to be able to touch the Point of Interest, but an important caveat to this if it’s an art piece that is suspended in the air, being under the Point of Interest is sufficient.