An archeological treasure trove stumbled upon by a couple of children.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

These primitive rock paintings include a very beloved depiction of a woolly mammoth.

The official meeting point for the oddly named governing assembly of ancient Sweden.

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

A prehistoric rock shelter that's literally in someone's backyard.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

A giant repository of accidentally discovered cave paintings up to 30,000 years old.

The abstract sandstone rock formations at this Algerian national park are rich with prehistoric art.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

These 40,000-year-old stenciled hands are older than the famous cave art in France and Spain.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

Massive prehistoric mammals used these stones as oversized scratching posts.

A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

This Denmark theme park is part family attraction, part experimental archaeology project.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Mosaics, storks, and brothels—this ancient city has it all.