The wars that have been waged over the past century have had the convenient effect of wiping out so many old structures and artifacts that I can't help but think they continue to cover up certain facts and 'preserve' artifacts in museums, in the back, where no one from the public will ever see them or have access to them.
The global flood of ancient times has a lot of good evidence too. The wear on the pyramids of Giza suggest the water level was all the way near the top of the great pyramid, and again, I think those structures are way older than we have been told. With everything being cyclical, another event with pole shifts is entirely plausible.
The original texts in ancient greek also paint a different picture of what went on back then, which is contradictory to a lot of the more modern religious texts.