Free Admission Mondays at MoMA PS1 INFO below. MoMA PS1 is one of the oldest and largest nonprofit contemporary art institutions in the United States. An exhibition space rather than a collecting institution, MoMA PS1 devotes its energy and resources to displaying the most experimental art in the world. A catalyst and an advocate for new ideas, discourses, and trends in contemporary art, MoMA PS1 actively pursues emerging artists, new genres, and adventurous new work by recognized artists in an effort to support innovation in contemporary art. More Info below.