When a place or attraction is naturally stunning, it means it requires no extra adornments or enhancements to make it beautiful. Many of these attractions are usually centered on nature and outdoor man-made sights. A naturally stunning attraction or destination has had nothing done to enhance its appeal; it exists naturally and has remained that way since its origins.
Some examples of naturally stunning attractions include Niagara Falls, on the U.S./Canada border; the Grand Canyon; Stonehenge; the pyramids of Egypt; and the Great Barrier Reef. All, as well as many other places around the world, are defined as naturally stunning because, while there are man-made structures and enhancements around these attractions, no big changes have been made to the attractions themselves to enhance them. They are beautiful and breathtaking in their natural state and have been for years.
When it comes to travel and seeking out naturally stunning destinations, it's important to do your research. Searching on the Internet for naturally stunning travel destinations might not get you what you are looking for; but searching under key phrases like "natural wonders" might yield you results. You can also consult with a travel agent on options for trips to destinations that include beautiful natural sights.