Ever wanted to swim the Great Barrier Reef, walk the Great Wall, or visit the rainforests of the Congo? Sure, they appear in the video below, but in a few years that may be the only way you'll ever see them
You might want to get to it, because in these natural wonders and landmarks could very easily disappear in your lifetime.
A number of factors, ranging from deforestation to climate change to erosion, will likely destroy these marvels before your grandchildren ever get the chance to see them.
Check out the video to see if anything on your bucket list will soon kick a bucket of its own. If you want to see these marvels in their glory, best book your tickets now, because they may not even be there to help you in your mid-life crisis.