1010 N. St. Mary’s St._credit Sarah Talaat1

The now-vacant building at 1010 N. St. Mary's was once AT&T's headquarters until the telecommunications giant moved to Dallas in 2008. Photo by Sarah Talaat. — The now-vacant building at 1010 N. St. Mary’s was once AT&T’s headquarters until the telecommunications giant moved to Dallas in 2008. Photo by Sarah Talaat.

The now-vacant building at 1010 N. St. Mary’s was once AT&T’s headquarters until the telecommunications giant moved to Dallas in 2008. Photo by Sarah Talaat.