Merchants and Manufacturers Building

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Merchants and Manufacturers Building
Merchants and Manufacturers Building (bayou view) Houston.jpg
The M&M Building
Location 1 Main St
Houston, TX 77002
Built 1930
Architect Giesecke & Harris
Architectural style Art Deco
Part of Main Street/Market Square Historic District
NRHP Reference # 80004130
RTHL # 10729
Significant dates
Added to NRHP September 17, 1980
Designated RTHL 1984

The One Main Building, formerly the Merchants and Manufacturers Building (commonly referred to as the M&M Building), is a building on the campus of the University of Houston–Downtown. The building is recognized as part of the National Register of Historic Places, is a Recorded Texas Historic Landmark, and considered a Contributing Building in Downtown Houston's Main Street/Market Square Historic District.[1] The building was built above Allen's Landing—an area where Houston's founders John Kirby Allen and Augustus Chapman Allen originally settled.

The Merchants and Manufacturers Building was built in 1930 and was the largest building in the city at the time.[2] Although the commerce-focused building featured 14 miles of floor space and could accommodate one-third of the city's population, the Great Depression in the United States stifled initial participation. The building was purchased by South Texas Junior College in the 1960s, which became the University of Houston–Downtown College in 1974.

The building remains as a largest facility of the University of Houston–Downtown and was given an official designation as "One Main Building," or simply the "Main Building," by the university.


  1. ^ "Merchant and Manufacturers (M&M) Building". Houston Deco. Greater Houston Preservation Alliance. Retrieved 2008-11-06. 
  2. ^ "One Main Building". University of Houston–Downtown. Archived from the original on December 26, 2005. Retrieved 2008-11-06. 

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Coordinates: 29°45′49″N 95°21′37″W / 29.76362°N 95.36032°W / 29.76362; -95.36032