Stewart Memorial Presbyterian Church, now Redeemer Missionary Baptist Church, is a Prairie School church in Minneapolis, Minnesota, in the Lyndale neighborhood. The Prairie School architecture was uncommon for use in churches. This church, which has a flat roof and broad eaves, but lacks a bell tower and other traditional church features, was inspired by Frank Lloyd Wright's Unity Temple in Oak Park, Illinois. It was designed by the firm of Purcell & Feick before George Grant Elmslie became a partner of the firm. The congregation was an offshoot of First Presbyterian Church and was named after the Reverend David Stewart.
The main portion of the church is organized around a cube-shaped auditorium with light provided by a wall of eastward-facing green-tinted windows. It has a narrower section with a deep balcony that extends to the south. Decoration is relatively modest, consisting mainly of wood strips in geometric patterns. The exterior is faced in brick and stucco. The church was listed on the National Register of Historic Places in 1978. In 1988, Redeemer Missionary Baptist Church bought the building and raised over $2 million for restoration and renovation.
http://en.m.wikipedia.org/wiki/Stewart_Memorial_Presbyterian_Church
Here's some more really interesting information: http://archive.artsmia.org/unified-vision/architectural-tour/stewart-1.cfm
Stewart Memorial Presbyterian Church
(now Redeemer Missionary Baptist Church), 1909-10
Purcell and Feick
116 East 32nd Street, Minneapolis
Stewart Memorial Presbyterian Church (now Redeemer Missionary Baptist Church) is one of the few Prairie School churches ever constructed. It is considered the first modern church in Minnesota and one of the first progressive structures in the Twin Cities. Purcell's revolutionary design clearly demonstrates Louis Sullivan's adage that "form follows function." With its cubic form, flat roof, large windows, broad eaves, and lack of a steeple, it was an unconventional form for a church at that time.
Purcell justified the absence of a bell tower as a way to save money and to imply that modern communication had rendered such a feature obsolete. The small neighborhood congregation held its services at a set time every Sunday, and if emergency information had to be conveyed, it could be done by telephone.
The church's cubic form is reflected in the main worship space inside. The square area has a balcony on the south side, as opposed to the conventional cross-shaped nave and transept. This floor plan allowed the entire congregation to be close to the celebrant during the service.
Purcell used continuous wood trim on the walls and ceiling to unify the interior. Simple cruciform designs are the main ornament, along with geometric electroliers, or electric chandeliers, featuring bare bulbs, still novel at the time. The most spectacular elements of this flexible space are the large, sliding west walls that now open from the main space to a two-story atrium surrounded by classrooms and offices. These glass pocket doors were walled over until the congregation could afford to build an education wing. Purcell and Feick anticipated this addition, which another firm designed and executed in 1915. The church was extensively restored in 2000.
(This was taken from the MIA link above
The sad thing is based upon what I could see, there was no money for upkeep. The trim was falling off and plantings were in need of some attention.