Architecture professor Soheir Zaki Hawas has dedicated her life to documenting the beautiful historic buildings in downtown Cairo and to trying to preserve them.
"Heritage is the memory of a city," Hawas says. "If I lose my memory for five minutes, I will not be able to introduce myself to tell you anything about anything."
She pulls her book off the coffee table in her living room; it took her years to document the buildings in downtown Cairo.
"I want to show you this page here," she says, flipping through the book. "This is a beautiful catalogue."