AMANPOUR: She showed me another room full of artifacts from shops, such as a Warner Brothers store in the World Trade Center mall.
FERER: As I walked through all these archives in 2002, trying to choose something that would be symbolic, I saw this, and I thought, well, that's pretty amazing.
AMANPOUR (on-screen): "That's all, folks," the iconic Warner Brothers signoff. What does it say to you?
FERER: It says it's over. To me, it says the age of innocence is over.
AMANPOUR (voice-over): Today, at Ground Zero, new towers are rising towards the sky. The finishing touches are being put on the 9/11 Memorial Plaza, which opens next Sunday, 10 years after the attacks.
In a center of the plaza is a pear tree that emerged from the rubble of the Twin Towers. It's known as the survivor tree. President Obama laid a wreath there a few days after Osama bin Laden was killed.
(UNKNOWN): (inaudible) the southern edge of this memorial plaza.
AMANPOUR: Michael Arad showed us the site. He's the memorial's designer.
ARAD: The difficult part of this project was the names arrangement.
AMANPOUR: The new memorial incorporates two large pools where the towers once stood. Around each pool are bronze panels inscribed with nearly 3,000 names of the dead. In an extraordinary move, Arad says families were consulted on how to organize the names. And we were asked not to film them, so that they will be the first to see them next Sunday.
ARAD: It took a year to arrange the names. So a name of -- obviously, names of relatives who died together would be grouped together, but also the names of friends and people that were engaged to be married and people who went to school together or commuted together or people that happened to die together that day.
AMANPOUR (on-screen): Co-workers?
ARAD: We got a request to place the name of someone's father next to her best friend. Her father was on Flight 11; her best friend was in the North Tower. And that flight crashed into that tower.
AMANPOUR: Next week, the memorial will finally open, and the World Trade Center site will once again be part of the city. It's been 10 years of hard work and sometimes bitter controversy for family members like Christy Ferer.
FERER: I think it's going to be much like childbirth. Once this is built, hopefully we'll all forget the pain we went through.
AMANPOUR: The pain, of course, was deeply felt by the youngest generation, children who had never experienced violence and hatred. Now, this book, "Art for Heart," features drawings and messages from 457 children who lost a parent in the 9/11 attack. They have poured their grief into this book. It's compelling, and it's heartbreaking. And for information on how to buy "Art for Heart," visit our website at abcnews.com/thisweek. Proceeds will go to the 9/11 Memorial Fund.
And next week, please join us for a special live coverage of the 10th anniversary of 9/11, "America Remembers."
We'll be right back.
AMANPOUR: That's our program this week. Remember, you can follow us any time on Facebook, Twitter, and at abcnews.com. Be sure to watch "World News with David Muir" tonight for all the latest headlines.
For all of us here, thank you for watching, and we'll see you next week.