Take, for example, the question of the origin of humanity. From whatever position of history we consider this issue, and the truth will turn out to be fantastic in any scenario. Be it evolution, an experiment of an extraterrestrial civilization, or a bacterium from deep space.
We can recall the eternal dispute between official historians and alternative researchers about some megalithic structures. If the truth turns out to be behind the official version of history, then you will have to come to terms with the great loss of technology by ancient people.
If alternative researchers turn out to be right, then the riddles will become even more, because we will be talking about an ancient highly developed civilization.
Regardless of the version of history, we have many facts that still remain mysteries for both official historians and alternative researchers.
These facts include the architecture of ancient sites, for example, in Sacsayhuaman, Ollantaytambo or Cuzco from Peru, Ishi-no-Hoden from Japan, the Temple of Jupiter from the largest blocks in Baalbek, the Nimrod fortress from Israel, and so on.
I made a gallery below with some examples.
Promotional video:
Regardless of the prism of your perception of this or that fact, it will not disappear anywhere, and there will be no more explanations for its existence.
Since enough mysterious facts have been collected to date, regardless of versions of history, they will continue to excite the minds of researchers and seekers of truth.