Shannon Stapleton/Reuters
The Finnish-American architect designed some of America's most futuristic, innovative structures during the late 1940s and 1950s, but Rosen says his work is only beginning to receive the attention and study it deserves.
Rosen's new documentary about the architect, called "Eero Saarinen: The Architect Who Saw The Future," will be shown on PBS in December 2016, and will be part of the New York Architecture and Design Film Festival at the end of September.
The film follows Saarinen's son, Eric, as he visits some of his father's most iconic works, each of which is remarkably distinct.
"Every one of these things looks like it's by a different architect," Rosen tells Business Insider of his interest in Saarinen, explaining that documentaries about most other architects would be boring since their styles repeat. "The next building never had anything to do with any innovations, discoveries or breakthroughs they made in the previous building."
Take a look at some of Saarinen's most impressive work.