Manhattanville College's Ohnell Environmental Park provides a learning space for educating students, faculty, staff and members of the surrounding community who wish to develop ecologically sustainable ways to preserve the past, present and future.

The Environmental Park consists of a classroom building designed by Maya Lin that is built to LEED-certification standards.  The non-invasive structure is made of recycled building materials with an Eco-Machine designed by legendary Ecologist John Todd.  This becomes a part of the architecture and helps to provide an environmentally sustainable streamIn addition to the new environmental classroom, Lin has also restored a historic stone chapel, which is the oldest of three chapels in Westchester County. The chapel's renovated stonework and translucent roof provide a spectacular space to be used as a contemplative center for students and the community.