Science Can't Explain
There are times historians find some mysterious objects they can't even explain. Relics from all over the world, some very old (we are talking about several centuries ago) some quite modern, but unexplained. How did they get there? Who built them? What are their meanings? All mysteries unsolved. Even after years and years of rigorous study and research, scientists have no clue.
Here are some of those objects, all together so you can be the judge. Be our favorite detective and try to find an answer, as a character from a mystery novel would. Have fun! And don't forget to share! Here are some mysteries unsolved by scientists from all over the world, some of them are just unbelievable!