Washington ? Victims of the Sept. 11 attack on the Pentagon will be remembered outside the massive Defense Department headquarters by a grove of trees, 184 lighted pools and benches engraved with the names of those who died.

Pentagon officials announced Monday that the memorial’s design, by two New York architects, had been chosen from among more than 1,100 entries in a competition.

The two-acre memorial will be 165 feet from the Pentagon, near the spot where terrorists crashed a hijacked jetliner into the building.

The benches will sit atop small lighted reflecting pools, arranged by age of the victims, from 3 to 71, and positioned parallel to the plane’s flight path, officials said. The Sept. 11, 2001, crash killed 125 people in the building and 64 on the plane. The five al-Qaida hijackers are not among the 184 people honored by the memorial.

“The thing I liked about it was it was a collective memorial and an individual memorial, yet it told the story of what happened on that day,” said Jim Laychak, who served on the victims’ family steering committee.

His brother, 40-year-old David Laychak, was a civilian budget analyst for the Army who died in the attack.

Stephanie Dunn, widow of 39-year-old Navy Cmdr. Patrick Dunn, said the design satisfies her need for a place where her year-old daughter and other visitors someday will be able to sit and reflect on the lives of those lost.

“It’s very important to us that they have a place where there’s a moment to pause,” said Dunn, who was three months pregnant at the time of the attack.

Officials said they hope to have the memorial complete by Sept. 11 next year. Its cost is estimated at $4.9 million to $7.4 million, to be paid from contributions and other funds with no federal money, officials said.

A model of the winning design of a permanent memorial honoring victims of the Sept. 11 attack on the Pentagon is displayed at a news conference in Washington. The winning design of the so-called Light

The designers are Julie Beckman, 30, and Keith Kaseman, 31, of New York City.

“The memorial had to be like no other memorial … because Sept. 11 was like no other day,” Beckman said.

In the design, each aluminum bench will have the name of a victim engraved on its face and a glowing light pool beneath it. Clusters of trees will be planted for shade and to make the site more intimate, officials said.

Announcement of the design selection follows the announcement last week in New York of a design for redevelopment of the site where the World Trade Center was leveled by terrorist airline hijackers on the same day.

That design will have a cluster of glassy, angled buildings and a 1,776-foot spire filled with gardens instead of office space. It would preserve part of the pit that was the foundation of the twin towers for an as-yet-undesigned memorial to the almost 2,800 people who died.