One of D.C.’s newest trophy office buildings now has the city’s biggest green wall. 17xM, a 334,000-square-foot, 11-story building at 1150 M Street, N.W., includes a two-story, 1,500-square ...

Planting spills over the terraces at the front of this four-storey concrete house set into a cliff face in Mexico City by 3archlab.