(CNN) -- Seven years after devastating terrorist attacks brought death to New York's World Trade Centers, the Pentagon and a Pennsylvania field, the first permanent, on-site memorial is being dedicated Thursday at the Pentagon. An artist's rendering shows the New York 9/11 memorial, with the museum entry pavilion between two pools. Official memorials at the other two sites are still years away. In New York, construction has begun on a complex that will include a memorial with a tree-shaded plaza and reflecting pools, and an underground museum with an entry pavilion. It's part of a bigger project, including new office towers and a transportation hub, whose target date has been repeatedly delayed.
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World Trade Center memorial plaza scheduled to open in 2011, museum in 2012
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Memorial at Pennsylvania plane crash site also due to open in 2011
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Pentagon memorial including benches, trees, pools is dedicated Thursday
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Watch 9/11 memorials in New York and Washington on CNN.com Live
World Trade Centers
World Trade Center
Engraved around the pools will be the names of those who died in the September 11 attacks as well as the victims of a 1993 terrorist attack on the @placeholder.