Investigation, Analysis and Publication

First National Center, formerly known as First National Bank Building, is a prominent mixed-use skyscraper in downtown Oklahoma City. The art deco tower is 406 feet (136 m) tall at the roof, and is 446 feet (150 m) at its spire and contains 33 floors. The building was constructed in 1931 by the First National Bank and Trust Company of Oklahoma City and has 990,000 square feet (92,000 m2) of office space. First National Center is currently the third tallest building in Oklahoma City, after the Devon Tower and Chase Tower, respectively. The tower is the sixth tallest building in the state of Oklahoma. The tower has a notable architectural resemblance to the Empire State Building in New York City. The First National Center is connected to adjacent buildings in the downtown area via the Oklahoma City Underground series of tunnels and elevated walkways. In 2007, the building had a 40% occupancy rate. By 2016, the occupancy rate had dropped to less than 20%.

The Baum Building was a historic building in Oklahoma City, Oklahoma. In 1909, Moses J. Baum, a Mississippi-born merchant who specialsed in women's garments, leased the land at the northeast corner of Grand and Robinson and built a five-story commercial building on the site. The building was modeled after the Doge's Palace in Venice, Italy. The building was completed in 1910, with the Baum company moving in on May 5th, 1910. The building was designed by Layton and Smith and cost $140,000 to build.During its lifespan, the building was also called the First Equity Building and the Insurance Center.

Colcord Hotel is a luxury boutique hotel located in downtown Oklahoma City, in the U.S. state of Oklahoma. The building was finished in 1909 and has been considered Oklahoma City's first skyscraper. It is 145 feet (44 m) tall and has 14 floors. Originally an office tower developed by Charles Colcord, the building was renovated by Coury Hospitality and reopened as a luxury hotel in 2006. Colcord Hotel is a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation.

Oklahoma Tower is a prominent skyscraper in downtown Oklahoma City's central business district. It is 410 ft (125 m) tall and has 31 floors. It was built in 1982. The tower is the fifth tallest building in Oklahoma City and 10th tallest in Oklahoma.

City Place is a mixed-use tower skyscraper in downtown Oklahoma City, in the U.S. state of Oklahoma. At 440 ft (134m), it is the 4th tallest building in the city and has 33 floors. Finished in 1931, it was Oklahoma City's tallest building for a short time before it lost the title to First National Center in the same year. In 2010, the top seven floors were converted into six condos; the penthouse condo occupies the top two floors. It is currently the 8th tallest building in Oklahoma.

The Devon Energy Center (also known as the Devon Tower) is a 50-story corporate skyscraper in downtown Oklahoma City, Oklahoma. It is the tallest building in the city and state, though it has fewer floors than the 52-story BOK Tower in Tulsa. It is tied with Park Tower in Chicago as the 62nd tallest building in the United States. Construction began October 6, 2009, and was completed in October 2012. The tower is located next to the historic Colcord Hotel, which Devon currently owns, on Sheridan Avenue between Hudson and Robinson Avenues. The office tower, a six-story rotunda, and a six-story podium structure comprise more than 1,800,000 square feet (170,000 m2) and was initially estimated to cost $750 million; however, the first formal appraisal of the tower and complex came in at only $707.9 million. It serves as the northern anchor of Oklahoma City's aggressive Core to Shore downtown redevelopment project.

Pioneers of 1889, or simply 1889, is an outdoor bronze sculpture by artist Leonard McMurry and landscape architect Thomas Roberts, installed in Oklahoma City, in the U.S. state of Oklahoma.

Galaxy is an outdoor sculpture by Alexander Liberman, installed outside Oklahoma City's Leadership Square, in the U.S. state of Oklahoma.

Leadership Square is an mixed-use office tower complex in downtown Oklahoma City, Oklahoma, United States. The complex was completed in 1984 and comprises One Leadership Square (North Tower) and Two Leadership Square (South Tower). One Leadership Square is taller at 308 feet (94 m) and 22 stories. Two Leadership Square is 224 feet (68 m) and 16 stories. They are the 10th and 19th tallest buildings in Oklahoma City, respectively.

101 Park Avenue is a building in Oklahoma City, Oklahoma. It was formerly known as the Skirvin Tower, built in 1932 as a luxury apartment-hotel annex to the Skirvin Hotel.

The 100 Park Avenue Building, formerly known as the Medical Arts Building, is a high-rise in downtown Oklahoma City. The 100 Park Avenue Building has 12 stories and is 160 feet (49 m) tall. The building is constructed in the Art Deco style and was designed by Solomon Andrew Layton. It opened in 1923, at which point it was the tallest building in Oklahoma City.

The Air Force Monument is an outdoor memorial and sculpture by Leonard McMurry, installed in Oklahoma City, in the U.S. state of Oklahoma.