Dallas is the third-largest city in the state of Texas and the ninth-largest in the United States.The Dallas-Fort Worth metroplex is the largest metropolitan area in the South and fourth-largest metropolitan area in the United States.The city's economy is primarily based on banking, Commerce, telecommunications, computer technology, energy, healthcare and medical research, transportation and logistics. The city is home to the third largest concentration of Fortune 500 companies in the nation.Dallas is a Center of education for much of the south central United States. The surrounding area also contains a number of universities, colleges, trade schools, and other educational institutions.Dallas developed a strong industrial and financial sector, and a major inland port, due largely to the presence of Dallas/Fort Worth International Airport, one of the largest and busiest airports in the World.
Dallas' architecture dates from the late 19th and Early 20th centuries, most of the notable architecture in the city is from the modernist and postmodernist eras. Iconic examples of modernist architecture include Reunion Tower, the JFK Memorial, I. M. Pei's Dallas City Hall and Morton H. Meyerson Symphony Center. Notable venues in the district include the Dallas Museum Of Art, the Morton H. Meyerson Symphony Center home to the Dallas Symphony Orchestra and Dallas Wind Symphony, The Trammell & Margaret Crow Collection of Asian Art, the Nasher Sculpture Center, and The Dallas Children's Theater.