Mercantile Continental Building, Apartment building in downtown Dallas, Texas, US

The Mercantile Continental Building at 1810 Commerce Street is a stone-and-tile structure whose 1958 Broad & Nelson addition brought it to 11 stories and 201,297 square feet. Its facade carries a 30-foot Millard Sheets mosaic of carved stone and Italian glass tiles with 22-karat gold ornament, showing a cowboy, Native Americans, horses and a stepped pyramid.

Mercantile National Bank opened the Mercantile Commerce Building in late 1948, a $1.65 million structure by Walter W. Ahlschlager with four underground parking levels and three office floors. In 1958 Broad & Nelson added eight floors, 201,297 sq ft, and an underground tunnel to the bank complex. Forest City's redevelopment delivered 180 apartments and 5,000 sq ft of retail in early 2013, with 20 percent of units set aside for low-income residents.

A 30-foot mosaic by California artist Millard Sheets covers the Commerce Street wall, commissioned in 1959 by R.L. Thornton, then president of Mercantile National Bank and later Mayor of Dallas. Carved stone and brightly colored Italian glass tiles with 22-karat gold ornamentation depict a cowboy, Native Americans, horses and wild animals. When redevelopment was planned, local residents raised concern; Forest City stated in 2009 that the mural would be preserved.

The garage entrance was on Jackson, Prather and Harwood Streets, and the 1,250-car spiral closed in 2007 when the underground link to the Mercantile Building was severed. The 2013 conversion left 180 apartments and 5,000 square feet of retail, with 20 percent of units set aside for low-income residents. The building faces Main Street Garden Park at the edge of the Government District.

The garage's 1,250-car capacity was reached by a continuous spiral ramp, entered from Jackson, Prather and Harwood Streets. The FBI held the second floor from April 1964 to June 1980. The 2007 rehabilitation of the Mercantile Building severed the tunnel link and closed the garage.