Reunion Tower, a 561-foot-high observation tower, completed in 1978, that is one of the most recognizable landmarks in Dallas, Texas. Located in the Reunion district of downtown Dallas, the tower was free-standing structure until the construction of an addition to the Hyatt Regency Dallas in 1998. The tower was designed by the architectural firm Welton Becket & Associates. Photo by Carol Highsmith, 2011.