The High Line is a new park that opened in 2009, built from an old elevated railway track running from Chelsea to the Meatpacking district. It’s still not completed, but so far it consists of pretty landscaping with bits of public art–making for a cool little walk in lower west Manhattan. And because it’s elevated, you get some nice views of the old industrial area, which is now mixed with fancy modern architecture.
The website for the project is here.