Wallace Clement Sabine Laboratory of Acoustics, 1918

The Acoustics Laboratory was designed both by Wallace Clement Sabine and George Fabyan. Sabine designed the interior reverberation chamber and Colonel Fabyan designed the exterior to fit his tastes. The building was designed over a period of several years and was constructed in 1918. The materials are brown brick and concrete "stucco." The roof is gently sloping with overhanging eaves. The plan of the building is irregular, with several wings. A contemporary addition is actually freestanding and connected by an enclosed breezeway. The Laboratory of Acoustics is a four-story building with the fourth floor being a small centrally located room. At the front of the building is a five-story brick tower with a statue of a bald eagle on the top, which is a replacement made from a mold of the original.

The interior portion which includes the acoustical laboratory is set a floor below grade and is two stories high to the first floor. This laboratory is a "room within a room" as it has a separate wall structure from the exterior walls of the building. There is a two foot gap between the exterior and interior walls of the laboratory. This provides a sound-proof barrier for acoustical testing. It is still considered to be one of the finest acoustical labs in the world. The upper floors of the building house office and storage space. The Museum and Library of the Acoustical Society of America is housed on the third floor, and includes the Baconian Levitation Device built by Bert Eisenhour and also several cryptological items. The building is extremely significant architecturally due to the uniqueness of its interior design for the acoustical reverberation chambers and as an outstanding example of eclectic architecture.

Engineering Building, c. 1922

The Engineering Building is a unique structure in that is was constructed in sections of 15x15 foot rooms. Colonel Fabyan, who collected shipments of unused freight as a hobby, received hundreds of 15 foot steel I-beams and constructed this building so as not to waste them. The construction of the building was supervised by Bert Eisenhour based on a design by Colonel Fabyan. Fabyan designed the building by stacking cigarette boxes against the wall of his office. Thus the box-like shape and the flat wall on the west elevation. This building, like the Acoustical Laboratory, is constructed of concrete "stucco." Recent work on this building has confirmed that many other materials, such as pieces of metal scraps, were used as consolidants within the concrete. This has resulted in an incredibly solid building. The building is believed to have been constructed in 1922, though the exact date is not known.

The building is rectangular in plan with the upper stories stepping back in rectangular and square rooms. The fifth floor is a single 15x15 foot room with a decorative relief panel on the east elevation. The majority of the windows on the building are large, wood-framed windows with ten panes. The roof on each level is slightly sloping and has overhanging eaves. The west elevation is a single wall with a slight roof overhang between each floor. An enclosed four-story stairwell was added to this elevation later. There is a concrete pier every fifteen feet on all floors and at the corners and a concrete band across the top of each floor directly below the eaves. There are two brick chimneys on the roof of the fifth floor room. This building is extremely significant architecturally as it is a wonderful example of eclectic architecture designed by George Fabyan.