Walkability is big in today's world. And Milwaukee ranks very high -- No. 13 -- on walkscore.com, a new Web site that ranks walkable neighborhoods using a walk score algorithm.

The walkable listings are calculated by applying the Walk Score algorithm block by block throughout a city. They also weigh scores by population density.

Not surprising, densely populated cities San Francisco, New York, Boston, Chicago and Philadelphia ranked 1-5, while more spread out cities like Charlotte, Nashville and Jacksonville fell to the bottom three (38-40).

Milwaukee ranked just below Denver (11) and Baltimore (12) and above Cleveland (14) and Louisville (15).

Great cities focus on the pedestrian and accessibility while using creative mixed-use developments to make streets work better for cars and people. Thus, Milwaukee's East Side and Downtown fare well in the scores. Notes the site, "The top 8 neighborhoods in Milwaukee are Walkers' Paradises. 29% of Milwaukee residents have a Walk Score of 70 or above."

WalkScore.com searched 2,508 neighborhoods in the 40 largest U.S. cities for amenities that allow residents to drive less, including the location of stores, restaurants and services, transit options, housing choices and green spaces.