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A $10 million tennis center is opening in Ward 7 this weekend. [Hill Rag]

Phil Mendelson backs a late-night ambulance reduction. [DCist]

People pay a premium to live in diverse neighborhoods. In D.C., Columbia Heights is tops. [Atlantic Cities]

New renderings for the big ballpark development. [DCmud]

What’s in the “federal interest” when it comes to D.C. architecture? [GGW]

Airbnb knows D.C. better than we do: Come to 16th Street Heights for its nightlife and Mt. Pleasant for its shopping. [UrbanTurf]

Half of new U.S. construction is green. [Architect]

Finally, we have reason to be jealous of Crystal City. [ARLnow]

Today on the market: Finnish sauna in Cleveland Park