A strange modern shoe print has been found in a rock estimated to be 15 million years old.
So far, no one can explain what these brands are and what their origins.
On some sunny day you must have come across this circle with the colors of the rainbow around the Sun.
One of the most important sites investigated in the region of ancient Anatolia.
The earliest known astronomical observatory in the Americas was built by an unknown culture, long before the Incas rose to power in Peru and began to celebrate their Sun God.
It is believed that during the day this deity emerged from the water and taught the human race arts, sciences and writing.
The cave painting is considered to be the world's oldest record of two people kissing.
Scientists around the world have tried to unravel its contents, but none have succeeded. Now, technology promises to help solve this 600-year-old mystery.