Joshua David, co-founder of the High Line, wrote in an email Monday that he would leave his post.
Executive director Jenny Gersten made the unexpected announcement Tuesday.
Friends of the High Line named Jenny Gersten as its new executive director.
Co-founder Robert Hammond will step down as Friends of the High Line's executive director.
The city will pay $5 million toward High Line construction costs despite its sizable donor base.
The park will host a series of talks on similar park projects in other cities around the country.
A benefit honoring High Line co-founder Robert Hammond will raise money for a theater group.
Jeff Koons' installation would suspend a full-size steam locomotive replica above the elevated park.
Dozens of volunteers began to cut back dead plants in the park in anticipation of the new growing season.
A proposal would open up the third section as soon as possible.
A new book by the High Line's founders chronicles the birth of the popular elevated park.
A new book by the co-founders of the Friends of the High Line, Joshua David and Robert Hammond, shares the behind the scenes tale of its creation.
The High Line's second stretch, from West 20th to 30th streets opened Tuesday.
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