The High Line was an elevated freight line that serviced the warehouses and factories of the Lower West Side. At points, a right-of-way was established through existing buildings.
The line has been abandoned since 1980 and much like the forgotten building of Detroit, grasses and trees have established themselves along the line. The Friends of the High Line are working with the City to preserve these viaducts and convert them into an elevated linear park and public spaces along the lines of the Promenade Plantée in Paris.
For a virtual tour check out oldnyc , or to see what's in store visit the design site. Also, check out the flicker cluster