When Manhattan’s High Line opened on the west side in 2009, locals and visitors alike flocked to the revitalized railroad trestle to marvel at its transformation into a gorgeous and walkable park.

In Istanbul (formerly Constantinople and Byzantium) there is a 1,500-year-old Roman cistern built by the Emperor Justinian to supply water to his palace and city, a purpose it continued to serve into modern times.

There are hints of the High Line in one of the biggest civic projects endeavors in Seattle’s history.

A group of teens is studying air quality along the Brooklyn-Queens Expressway in an effort to get a new park built on top of the road, according to community organizers.