Dealey Plaza /ˈdiːliː/ is a city park in the West End Historic District of downtown Dallas, Texas.

[14]: 11–14 Dealey Plaza was built on land donated by early Dallas philanthropist and businesswoman Sarah Horton Cockrell.

The plaza is named for George Bannerman Dealey (1859–1946), a civic leader and early publisher of The Dallas Morning News, who had campaigned for the area's revitalization.

Monuments outlining the plaza honor previous prominent Dallas residents, and predate President John F. Kennedy's visit by many years.

At the plaza's west perimeter is a triple underpass beneath a railroad bridge, under which the motorcade raced after the shots were fired.

Buildings immediately surrounding the plaza have not been changed since 1963, presenting a stark contrast to the ultra-modern Dallas skyline that rises behind it.

The grassy knoll is a small, sloping hill inside the plaza that became of interest following the assassination of United States President John F. Kennedy.

Located near the north grassy knoll on November 22, 1963, there were several witnesses, three large traffic signposts, four sidewalk lamp posts, the John Neely Bryan north pergola concrete structure including its two enclosed shelters, a tool shed, one concrete wall 3.3 feet (1 m) high connected to each of the pergola shelters; ten tall, wide, low-hanging live oak trees; a five-foot-high (1.5 m), wooden, cornered, stockade fenceline measured at approximately 169 feet (52 m) long; six street curb sewer openings, their sewer manholes and their interconnecting large pipes; and several 2 to 6 feet (60 to 180 cm) tall bushes, trees and hedges.

[23] Robert MacNeil, a White House reporter for NBC News who exited one of the two press buses immediately after the shots were fired, ran with some police officers up the grassy knoll and over the fence but found no one there.

[32][39] The Associated Press used a copy of Moorman's Polaroid photo in its reporting of the events at Dealey Plaza during JFK's assassination.

[32][33] Out of the 104 Dealey Plaza earwitness reports published by the Commission and elsewhere, 56 recorded testimony that they remembered hearing at least one shot fired from either the Depository or near the Houston/Elm Street intersection.