BETHESDA, MD. — Atlanta-based Piedmont Office Realty Trust has acquired Opus Center at Rock Spring Park II, located on Rockledge Drive in Bethesda, from its developer, Opus East, for an undisclosed amount. Piedmont acquired Opus Center at Rock Spring Park I in November and will rename the two eight-story buildings, which total 407,000 square feet, Piedmont Pointe I and II. Eric Berkman and Steven Gichner of Grubb & Ellis’ Washington, D.C., office represented Opus East, and Piedmont’s Wil Stone and Brad Pittman represented their firm. Piedmont is pursuing Silver LEED certification for the buildings.