New York’s High Line has spawned big public green-space ideas worldwide. Here, the top projects to look for:

The Underline, Miami
The project: A 10-mile walkway under the Metrorail, from the Miami River to Dadeland South Station, in a city known for being dangerous for pedestrians and cyclists.

The update: Construction is set to go from next fall to 2022.

Click here for Travel + Leisure’s article about the Big, Beautiful Parks of The Future.