The Coso Artifact
https://en.wikipedia.org/wiki/Coso_artifact

Egyptian Aircraft
https://en.wikipedia.org/wiki/Saqqara_Bird

The Klerksdorp Spheres
https://en.wikipedia.org/wiki/Klerksdorp_sphere

The Ulfberht Swords
https://en.wikipedia.org/wiki/Ulfberht_swords

Adam's Bridge
https://en.wikipedia.org/wiki/Adam%27s_Bridge#Disputed_origins
https://www.ancient-origins.net/unexplained-phenomena/17-out-place-artifacts-said-suggest-high-tech-prehistoric-civilizations-020544

The Dropa Stones
https://en.wikipedia.org/wiki/Dropa_stones

The Great Wall of Texas
https://www.theepochtimes.com/uplift/buried-in-time-the-great-wall-of-texas-could-change-history_1103905.html

The Hidden Character Stone
https://www.ancient-code.com/the-mysterious-270-million-year-old-hidden-character-stone/
https://en.wikipedia.org/wiki/Hidden_character_stone

The Oklo Nuclear Reactor
https://en.wikipedia.org/wiki/Natural_nuclear_fission_reactor

The Giant's Fingertip
https://www.ancient-code.com/a-38-centimeter-long-finger-found-in-egypt-evidence-of-the-nephilim/