Recently opened in New York, the High Line is a unique new public park as it isn’t at ground level, but elevated on the former freight railroad spur called the West Side Line. The park covers 2.33 km (1.45 miles) along 10th Avenue from West 30th Street in the North to Gansevoort Street in the South.
R. Agrawal, J. Gehrke, D. Gunopulos, and P. Raghavan. Proceedings of the ACM SIGMOD Int'l Conference on Management of Data, Seattle, Washington, page 94--105. ACM Press, (June 1998)
K. Cordes, B. Rosenhahn, and J. Ostermann. The 15th International Conference on Computer Analysis of Images and Patterns (CAIP), Lecture Notes in Computer Science (LNCS), 8047, page 327-334. (August 2013)
M. Steinbach, L. Ertoz, and V. Kumar. New Vistas in Statistical Physics -- Applications in Econophysics, Bioinformatics, and Pattern Recognition, Springer-Verlag, (2003)