In the past 50 years, Denver has grown from a small city to a sprawling metropolitan region. With urban sprawl comes gentrification. The Takeaway caught up with Andres Duany, the founding member of the New Urbanism movement, to ask him about gentrification. How do you keep a neighborhood mixed, economically and socially?

Also, hear this bonus web-only interview we did with Duany on urban sprawl!

This week The Takeaway is examining Denver as a laboratory for how the American city and surrounding suburbs are changing. The so-called "new urbanists" are pushing for more walkable, mixed-use (and mixed price) communities. They are gathering in Denver this week for the Congress on New Urbanism.

Matt Dellinger, transportation writer, joins The Takeaway to talk about who he's met and what he's learned while on safari in downtown Denver.

Follow along on The Takeaway's Urban Safari series.