When the 3-decade-old skin-care brand Aesop opens a standalone store, it frequently taps a local firm to design the space. As a result, no two shops are alike, yet all reflect the Australian brand’s ethos. “They want the DNA of each project to emerge” from the specific local condition, says Washington, D.C., architect David Jameson, whose namesake firm designed Aesop’s first store in the nation’s capital.