If you need some flat design ideas, try out this Define Location SVG icons. If you want to modify the content of this SVG file only need Adobe Illustrator or any other vector related software.
You have the download buttons bellow and can choose between two popular extensions, SVG or PNG formats. Also, before downloading the Define Location SVG icon, you can try the colors from the top of the icon, and test it, if the color fit with your ideas. If not, just refresh the page and you'll have new posibillities