Fancy a stroll in the park? There is a difference though. This one rises about 10m above a network of busy neighbourhood streets crisscrossing underneath.
Lush colourful gardens, music, intriguing works of public art and strategic viewing spots alongside a walkway that runs for 1.6km combine to provide a pleasant promenade in the sky for more than four million people who visit the High Line park in Manhattan annually.
The park is a major transformation from the previous role of the structure it sits on. For more than 45 years, an elevated railway three storeys above the streets carried freight to and from factories and warehouses on Manhattan's West Side.
After the last train rumbled along the High Line in 1980 carrying three carloads of frozen turkeys, the railway was abandoned.
The southernmost section had already been torn down and what was left was threatened with demolition. Enter the Friends of the High Line, a non-profit community group which fought to preserve and transform the remaining structure into a practical public facility.
Eventually, the High Line was donated to the City of New York by the freight rail owner and work was begun to convert the deteriorating facility into public open space. Hundreds of species of trees, shrubs and grasses were planted, many inside rail tracks. About one-third of the High Line's original rail lines was retained and incorporated into the design of the elevated park.
The first section of the new park was opened in 2009, followed by a second section two years later. Currently, the park runs from Gansevoort Street in the Meatpacking District north alongside 10th Avenue to West 30th Street.
Besides the extensive gardens, a walk on the High Line offers panoramic views of the Hudson River, well-placed viewing spurs and platforms show the varied architecture of the West Side area and the 23rd Street lawn provides a comfortable rest area and gathering space, particularly during the warmer months.
There is also access to the busy Chelsea Market, which was serviced by the railway in the era when the building was operated by the Nabisco Baking Company.
Along the length of the walkway, about 15 works of public art attract keen interest from passers-by.
The High Line relies largely on financial support from the public for its continued existence. Philanthropic funds and personal donations support 90 per cent of its annual operating budget.
The park is maintained and operated by Friends of the High Line in partnership with the NYC Department of Parks and Recreation.
The High Line is a fine example of how disused and deteriorating city infrastructure can be reborn as a valuable attraction for residents and tourists.
Work is under way to refurbish the final section of the elevated railway and extend the High Line park about 800m further north to West 34th Street. The new section of park is due to open next year.