[7] She also utilized tactical urbanism to create a greenspace at Freeman Plaza in Hudson Square in Manhattan, described as an unlikely space for a park.
The park is part of a broader effort to make the streetscape in Hudson Square more sustainable through the addition of trees, greenspace, and water drainage systems and an effort to reclaim urban spaces that are currently dominated by cars.
[5] She has also been a member of the New York City Public Design Commission and served as its president.
[4] She presided over decisions on some controversial topics, such as the removal of the statue of J. Marion Sims from Central Park.
[12] Nielsen is also a professor, having taught at the Pratt Institute for thirty years.