A monument was an object set aside as a memorial to an event or person. They could range from the simple to elaborately created works of art. Some species erect monuments to mark the grave of a dead person.

Gul Darhe'el was buried under one of the largest monuments on Cardassia Prime, a fact which Gul Dukat witnessed and offered as proof that Darhe'el was indeed dead when Aamin Marritza claimed to be him, alive and well. (DS9: "Duet")

After arranging for the Cardassian Union to join the Dominion in 2373, a monument to Gul Dukat was erected outside the gate to the Imperial Plaza on Cardassia Prime. (DS9: "By Inferno's Light")