They are some of the earliest structures ever built, and for thousands of years they were the tallest structures in the world. They are the great pyrimids of Giza in Egypt. With each pyrimid containing the body of past pharos, treasures, and servants.
There are many many rooms in each pyrimid. Some may contain treasures, others might have oils and herbs, while others may have nothing in them at all. They built many traps and empty rooms to try and keep everything safe from grave robbers.
All three of these pyrimids were built during the third and fourth dynasty, and sadly, none of these pyrimids were complete before their occupants reign was over. They took decades upon decades to complete and required the use of thousands of workers to resurrect such magnificent structures.
These pyrimids are one of the seven wonders of the world and are a big part of world history. Everyone should try and get a chance to see these one of a kind structures.