There are different beautiful places in the world. It will depend on you which one you think you will appreciate the most. There are some who feel that the hidden lagoon in Palawan, Philippines is one of the best places to see. There are also some who think that the view of Machu Pichu is unlike any other place that they have seen.
There are some who think that the pyramids in Egypt are truly world class. It would depend on you what you would like to see in nature. All of the places that you visit can become more beautiful with the natural beauty of nature in the background.