Richard Serra, today’s greatest living sculptor of Minimalist abstraction.

This is sculpture is an engulfing experience. Moving through the construction, you become acutely attuned to sight, touch and sound and to your own being in time and space.

Consciousness itself becomes an object of consciousness. Perhaps there’s a quasi-religious dimension, too, if you think of the maze as an ancient participatory ritual object in which the uncertain journey of life is ceremonially enacted and the possibility of spiritual progress is metaphorically expressed.

“NJ-1” is at the Gagosian Gallery, 522 West 21st Street, Manhattan. “Above Below Betwixt Between,” “Every Which Way,” “Silence (for John Cage)” and “Through” are at 555 West 24th Street; 212-741-111, Gagosian.com. Both exhibitions run through July 29.