Many New Yorkers will tell you they can’t imagine life without the city’s most coveted green space, The High Line. Built in the 1930s, as part of a massive public-private infrastructure project called the West Side Improvement, the track (now a pathway) was designed to lift freight traffic 30 feet in the air, removing dangerous trains from the streets of Manhattan’s largest industrial district. Now used as an elevated public park, the city anxiously awaits the birth of an underground sibling, the Lowline.
