Atlanta is very car-centric, but the Beltline corridor that surrounds the city is a pedestrian / cyclist heaven. Atlanta is already one of the greenest cities in the world - there are so many trees you'd be hard pressed to find a comparison. The Beltline exemplifies this - there's a park every single mile you walk. Businesses, restaurants, bars, and residences have sprung up along the entire track. Each bend has a bit of the flavor of its neighborhood. Entire weekends can be spent on the Beltline.
They're expanding trails out and into the suburbs. The Palasades, a hilly oasis by the Chattahoochee river. The Silver Comet bike trail even goes all the way to Alabama.
The Beltline has reinvigorated the entire city of Atlanta and captivated the minds of urban planners around the world.
If I had the capital, I would be buying so many homes here.