Outdoors

• outside: outside a building; "in summer we play outside" (Google)
• where the air is unconfined; "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open". (wordnet.princeton.edu)
• The natural environment, commonly referred to simply as the environment, is a terminology that comprises all living and non-living things that occur naturally on Earth or some region thereof.(en.wikipedia.org/wiki/Outdoors)
• The environment outside of enclosed structures; the natural environment in the open air; Not inside a house or under covered structure.(en.wiktionary.org/wiki/Outdoors)
• outdoor(a): located, suited for, or taking place in the open air; "outdoor clothes"; "badminton and other outdoor games"; "a beautiful outdoor setting for the wedding"(wordnet.princeton.edu/perl/webwn)
• Wilderness is generally defined as a natural environment on Earth that has not been modified by human activity.
• Situated in, designed to be used in, or carried on in the open air. (en.wiktionary.org/wiki/outdoor)
• This type of furniture has been specially treated to withstand harsh weather environments, so it won’t rust or tarnish. (reviews.ebay.ca)