The Triangle is a region of historical significance in the original part of Downtown Oklhoma City. Full of interesting places, many of the original buildings are still standing. Among them, Calvary Baptist Church, located at 300 N. Walnut. According to locals, the church actually passed up an opportunity to hire Martin Luther King, Jr., because the church members thought that he was too young. Later, in 1960, he spoke at the church during his rally for civil rights. The building has another significant link to the beginning of the civil rights movement. It was here that Ms. Clara Luper planned on of the nation's first sit-ins in 1958.

Another interesting building is the City Hopsital. Located at 401 N.E. Second, City Hospital was built in 1912. Years later, it was registered as a charity hospital where post-graduate medical students provided care for patients. In 1919, the Department of Health utilized the building for its laboratory. In the 1940s the building changed hands yet again when it housed the YWCA Stile's Community Center.

Deep Deuce, located in the Triangle has a solid history in the formation of Jazz - a form of music influenced by African-American rhythms. This was a very popular area for jazz music back in the twenties and thirties. Several of the great jazz legends, such as Charlie Christian and Jimmy Rushing, got their start in the music clubs of Deep Deuce. The area is referred to as “Deep Deuce” because of its location on Second Street . Pictured here are the “Blue Devils.”

The flat iron area is located near Fifth and Harrison in the midst of The Triangle. The term “flat iron” originated from the clothes iron that was heated on a stove. This name was given to three buildings because of their wedge shape.

Joseph Bryan Rolator, a doctor remembered for making house calls on horseback, came to Oklahoma City in 1890 and later founded the Rolator Hospital . In 1911, the building was leased to the State to be used by the University of Oklahoma College of Medicine. The hospital changed hands several times after that. The building, which was located at 325 N.E. Fourth, was destroyed by fire in 1982.

Additionally, the Slaughter Building , located on the northwest corner of Second and Stiles, was known as “doctor's row” in the early 1900s. Dr. Wyatt H. Slaughter, said to have been the first black physician in the area, practiced medicine here. The building also featured an auditorium upstairs where dances were often held.