New York is a city so dense that they actually created a park elevated above the street. The High Line is a park created on an abandon, historic freight rail line that is elevated above the streets of Manhattan’s west side. The elevated structure was threatened with demolition, but community residents formed the Friends of the High Line and successfully fought for its preservation and transformation into the lovely park it is today. The first part opened in 2009, and a second portion opened in 2011. They are currently working on transforming a third and final section. The entire length of the structure has a paved trail, and there are plants almost the entire length of the trail. There is also public art along the park. The designers did a nice job of preserving the structure and accentuating that the park is built on an historic rail line.