Many of these are monuments to Saddam and his glory. The first thing you see in the film is a distant view of a Victory Arch, two crossed swords.

From the description in the article:

The most famous of these are the Victory Arches in Zawra Park. The arches are made of enormous stainless steel swords that cross over the entry to military parade grounds. Two arms -- cast in bronze -- support the swords. At their base, thousands of helmets spill out across the ground.

The brutality of the image is almost impossible to convey. The arms are modeled on Hussein's; the helmets were pillaged from dead Iranian soldiers. The parade grounds extend barely a quarter-mile from between the raised swords -- they are nothing more than a stage set, detached from the surrounding landscape around them. It is a gruesome expression of human cruelty.

Another one shown is the Monument to the Unknown Soldier.

A description from a different source:

The Monument to the Unknown Soldier is said to be inspired by the glorification of a martyr from the Iran-Iraq war. What looks like to many as a flying saucer frozen in midflight, represents a traditional shield (dira'a) dropping from the dying grasp of an Iraqi warrior. The monument also houses an underground museum.

The second link has a lot more pictures.