Companies of all stripes have flocked to Midtown's office buildings, including the new headquarters for railroad Norfolk Southern and a technology division of health insurance company Anthem, a licensee of Blue Cross Blue Shield.

Macy's said earlier this month that it will open a $14 million technology hub in the T3 building, a project expected to bring 630 jobs. The positions will focus on software development for online sales.

The 230,000 square-foot T3 is built with a frame made of heavy timber. New building codes and advances in construction technology have allowed architects to design much taller and larger heavy-timber buildings. The wood construction has a less-harmful impact on the environment than steel and concrete, according to Hines.

Although T3 stands for timber, transit and technology, the building is located about a mile from the MARTA Arts Center rail station. A MARTA bus route does pass in front of the building.