Prime Lot in Marion Oaks—Build Where Nature Meets Convenience. This .23-acre lot in desirable Marion Oaks Unit 3 offers the ideal setting to bring your vision to life. Tucked near the scenic Ross Prairie State Forest, you’ll enjoy the calm of nature without sacrificing access to modern necessities—groceries, healthcare, and major roadways are all close by. Whether you’re planning a personal sanctuary or designing a custom home for a client. Perfectly positioned lot ready for your custom build.