al aire libre

adj. outdoors, out-of-door, alfresco

= open-air, outdoors, in the open, out of doors
Ex: A modern comfortable library could look like that in Berlin's Tiergarten, with its open-air gardens, or resemble Evanston's library with its comfortable chairs and elegant (and, one hopes, safe) fireplaces. Ex: In 1984, The Getty Conservation Institute embarked on a programme of museum environmental research covering air pollution generated outdoors and indoors, and microenvironmental studies. Ex: As expected, bats avoided obstacles while flying through vegetation and intercepted flying prey in the open. Ex: He merely told me that Margaret was not very strong, and that she needed a change of air, and that she should keep out of doors.