Spanning 32 feet along the mezzanine walls at the 42nd Street - Port Authority Bus terminal subway station is Lisa Dinhofer’s “Losing My Marbles,” a glass mosaic work depicting toy marbles, challenging the viewer’s imagination by playing with illusions that alter physical perceptions of space and movement. Dinhofer describes herself as an ‘illusionist’ artist rather than a ‘realist,’ as the spaces she creates in her artwork are believable, but not actually real. Rather, she designs and invents her own space in her work. Installed in 2003, the work is one of many in the MTA’s “Art for Transit” initiative, which encourages the use of public transit by presenting visual and performing arts projects in subway and commuter rail stations, while simultaneously increasing access to public art. The permanent art program is one of the largest and most diverse collections of site-specific public art in the world, with over 300 works by world famous, mid-career, and emerging artists alike.