Complex sentence: Since that building's demolition, the remaining prominent buildings that face the former square are those that make up the AT&T Michigan Headquarters, along with the Times Square Detroit People Mover station, which houses the Detroit People Mover Operations and Maintenance Facilities.
Split into simpler sentences: Since that building's demolition, the remaining prominent buildings that face the former square are those that make up the AT&T Michigan Headquarters. The Times Square Detroit People Mover station houses the Detroit People Mover Operations and Maintenance Facilities.