The Paul Findley Federal Building in Springfield, Illinois is located on the north half of a city block bounded by Sixth, Monroe, and Seventh Streets. A wide sidewalk surrounds the building at Sixth and Monroe Streets. Brick paving lines the street edges and contains trees and benches.
The classically-designed federal building has three stories, an attic and a basement. The exterior is surfaced entirely in grey limestone blocks. A limestone entablature located between the second and third floors extends along the north, east, west and portions of the south elevations. Decorative terra cotta cresting tops the limestone elevations of the building.
This building and its site remain primarily unchanged from its original construction. The site contains new surfaces. Minor alterations to the exterior of the building have taken place, including the addition of an accessible ramp at the front and two stair towers at the rear of the building.
The main (north) facade is symmetrical with a long, recessed central portion flanked by two end pavilions. The central portion is made up of thirteen bays separated by fluted Ionic columns which support the entablature. Doric pilasters at the third floor level align with the columns. Each bay at the first and second floor level contains paired metal double-hung windows separated by a decorative cast-iron spandrel. Each bay at the third floor contains a metal double-hung window.
The entrance bays project slightly from the corners of the end pavilions. A pair of Doric pilasters flank a keystone arched opening within each entrance bay. Granite steps lead to the recessed entrance doors within the arch. The entrance doors are metal double doors with glazed openings. The remainder of the arched openings are infilled with glazed transoms. Three small windows are centered above the entrance arch at the second level, and three windows are evenly spaced across the third floor level. The corners of the end pavilions recess and contain a single window at each floor level.
The east and west elevations are mirror images of each other. The northern-most portion of each bay contains four bays separated by Doric pilasters at the first and second floor and pilasters at the third floor. Each bay contains a window at each floor level. The remaining portion of the building recesses slightly from the northern portion. Seven window openings are evenly spaced along each floor level.
The materials and elements of the north, east and west elevations continue to the south ends of the east and west wings. These elevations contain three evenly spaced window openings at each floor level. The limestone surfaces and elements turn the corners at the stairhall additions.
The south side of the building is made up of the east, west and south elevations of the three-story, e-shaped main building. This includes the three-story projecting piece that contains the Courtroom and the one-story mail workroom. The elevations within the e-shaped portion have brick surfaces with simple limestone trim which continues from the limestone elevations. Window openings are spaced along the walls. The south elevation of the projecting piece contains limestone trim at the third story, where the Courtroom is located. Six bays separated by paired limestone pilasters originally contained window openings, but are now blocked with limestone. The mail workroom also has a brick wall surface with limestone trim. Door openings, single and double, are lined along the wall. A metal canopy projects over the mailing platform.