There is nothing like masturbating outside.
My house backs up to a greenbelt, so I don't have any neighbors behind me, just a wooded area. Neither of my next door neighbors can see my back yard. Some evenings I like to walk out into my back yard completely naked. Feeling the air against my cock and balls gives me a hard on before I even start touching myself. I lie down on the grass and jack off. I feel so much closer to nature jacking off outside and my orgasms are so much more intense.