Places, much like animals can become endangered, and some of the world's most amazing sights are gradually disappearing. Scientists contend that climate change is affecting oceans, reefs, beaches, and even cities, leading to potentially drastic changes. Development is another danger for once-pristine, off-the-beaten-path spots and their unique cultures. Here are 10 places on the brink of forever changing, and some that are threatening to disappear altogether. Trust us, you want to see these now—just remember to travel responsibly and respectfully.