La Brea Tar Pits
The US is full of natural wonders, but one of the most popular is the La Brea Tar Pits in Los Angeles' Hancock Park.
Tar has seeped up through the ground in this part of the country for thousands of years and it has regularly been thick enough to swallow up unfortunate animals that wandered in.
Due to the preservative nature of the tar, the pits present a fantastic opportunity for paleontologists, who are able to excavate the fossils of these creatures and examine them.
Everything from mammoths and big cats to mice and pollen grains have been found, building up a fascinating picture of Los Angeles through the ages.
The on-site George C Page Museum holds everything that is pulled out of the tar and also acts as a working research center for scientists carrying out projects on it.
Visitors can check out both the pits and the museum during stays in Los Angeles hotels, which will be fascinating for anyone with an interest in history and nature. Adult tickets cost $12, but there is free admission on the first Tuesday of each month except in July and August.