Columbia, Maryland

From Wikipedia:

Columbia is a planned community that consists of ten self-contained villages, located in Howard County, Maryland, United States. It began with the idea that a city could enhance its residents’ quality of life. Creator and developer James W. Rouse saw the new community in terms of human values, rather than merely economics and engineering. Opened in 1967, Columbia was intended to not only eliminate the inconveniences of then-current subdivision design, but also eliminate racial, religious, and class segregation.

The census-designated place had a population of 99,615 in 2010, making it the most populous community in Maryland after Baltimore. In 2010, Money magazine ranked Columbia (together with Ellicott City, its neighbor to the north) #2 out of the 100 “Best Places to Live” in the United States.