BOSTON >> A giant mural by an Iranian artist making his U.S. debut is turning heads in one of Boston’s busiest areas.

The artwork by Mehdi Ghadyanloo titled “Spaces of Hope” is a stunning expression of optimism he hopes can lead to better understanding between the peoples of the two nations.

The mural across the street from South Station depicts a line of about 200 people, many holding red helium balloons, ascending a spiral staircase to an opening in the roof where a single giant balloon slips into the blue sky.

He says his mural is all about inspiration and hope, and wants it to serve as a bridge between cultures.

The mural was commissioned by the Rose Fitzgerald Kennedy Greenway Conservancy, which oversees the land.