The U.S. Federal Courthouse forms a spiraling crescent around ancient Copper Beech and Linden trees original to the site. A colonnaded entry pavilion leads to a curved colonnade for pedestrians, and the grand stair leads to the courtrooms on the building’s third public level. Judges’ chambers are located in a parsonage-like annex. The facade is a combination of limestone precast and glass with a three-story circular colonnade. The building, designed by Moshe Safdie & Associates, is constructed out of 40ft precast columns faced by a custom designed curtain wall. The main entrance is bordered by an all-glass pavilion structure.