Dahshur in Egypt is the site of the construction of the first two pyramids of Egypt. They served as a practice for the Great Pyramid of Giza.
The first, the oldest, is the rhomboid pyramid, which is considered a failure, but still stands.
The one we see here is the second one, the red pyramid. Its name comes from the material used to build it, the red limestone. It is considered a success and served has a model for Cheops.