DURHAM, N.C. (AP) - The National Museum of African American History and Culture was a long time coming, but for architect Phil Freelon it was right on time.
"It seems like I was preparing for that my whole life," Freelon said in an interview at his office in Durham. "It came along at a time when I was prepared. If it had come online 10 years earlier, I think the Smithsonian might have considered me too young or not as experienced."
Freelon, 63, was principal architect for the museum, which opened to intense acclaim and popularity Sept. 24 in Washington.
He's now world-renowned for his designs, but his success didn't come quickly or easily.
While home for the summer from college, he once resorted to nagging a local architect into letting him sit at a spare desk and deliver blueprints to engineers as he sought to enter a field with few fellow African-Americans.
Freelon, a native of Philadelphia, worked for years at firms in Texas and North Carolina before opening his own with one employee - himself. It took more years to build a national reputation, designing projects such as the National Center for Civil and Human Rights in Atlanta and the Museum of the African Diaspora in San Francisco.
Freelon doesn't design prisons, casinos or strip shopping centers, preferring libraries, museums and schools - "projects that contribute to society in some way," he said.
A few years ago, The Freelon Group merged with Perkins+Will, where he's the managing and design director.
His architecture team competed against larger, better known firms for the National Museum of African American History and Culture, and Freelon felt like an underdog. However, his team aced a key criterion, museum deputy director Kinshasha Holman Conwill said: "an understanding of the project."
"That's where they knocked it out of the ballpark," she said.
Freelon's personal style is "persuasive without being bullying," she said. "Some architects have huge egos, and they kind of beat their clients into submission. Phil makes you feel like maybe it was your idea."
Yet his crowning success came mixed with heartrending news.
Months before the Washington museum opened, he was diagnosed with ALS, a degenerative neurological disease that leads to total paralysis. Average life expectancy after diagnosis is three to five years.
"This condition is fairly predictable," he said. "There's no cure. You have to kind of make your own peace with it. And my approach is to keep it moving and not to go home and just fret about my misfortune, but to continue to do the work that I love and that is making a difference in people's lives."
His current projects include a $50 million expansion of the Motown Museum in Detroit. He started it by asking steering committee members for images of buildings they loved and for something from Motown that resonated with them, said Robin Terry, the museum's CEO and chairwoman.
"Then we went around the room, and each person shared whatever their object was," said Terry, grandniece of Motown founder Berry Gordy. "It was such an authentic experience, because it connected everybody to what that thing is that's so magical and special about Motown for them. And he ... continues to infuse that kind of authenticity into our process."
Freelon and his wife, Grammy-nominated singer Nnenna Freelon, have strolled through the Washington museum anonymously, eavesdropping on visitors' conversations. The couple wanted to know how people are affected by his design - a building with a three-tiered shape inspired by a symbol from the Yoruba people of West Africa featuring a crown.
"I found that it was very generational, the way people experienced the museum - that very, very young children were moved by different things than people who lived some of the history that they were seeing displayed," Nnenna Freelon said. "And what I love about the museum is that there are some very painful stories that have been told, I think, in a very artful, honest and dignified way. But it isn't all pain. You need that yin and yang."
The museum sits near the famed reflecting pond, site of the 1963 March on Washington, which both Freelons' fathers attended. U.S. Rep. John Lewis, who helped organize the march led by the Rev. Martin Luther King Jr., also helped give birth to the museum. His 2003 bill got the government wheels turning to place it on the last buildable space on the mall.
In December, Freelon and his family established the Freelon Foundation and launched the Design a World Without ALS campaign to raise $250,000 for the Duke ALS Clinic. The campaign will feature an April 20 performance at the Carolina Theatre in Durham. Nnenna Freelon will sing.
While Freelon continues to design buildings, he's let go of other duties. He no longer teaches at MIT, and he resigned from the U.S. Commission of Fine Arts.
But he finds time to spread his love of architecture in other ways, such as visiting his grandson's second-grade class at the Duke School one January afternoon. He displayed a slide showing the fountain at the Atlanta center and asked a boy to read the King quote that inspired the installation.
"We are determined to work and fight until justice runs down like water," the boy read, "and righteousness like a mighty stream."
Freelon helped the child pronounce 'righteousness,' then explained the role that a beautifully designed building can play in the civil rights movement.
Later that day, describing the visit to his wife, Freelon was still upbeat about the class.
"Maybe one day someone will say, 'I decided to be an architect after hearing Phil Freelon speak,'" he said.
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AP National Writer Allen G. Breed in Durham, North Carolina, and Mike Householder in Detroit contributed to this story.
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Follow Martha Waggoner on Twitter at http://twitter.com/mjwaggonernc