Prehistoric

Now an international mecca, the streets of New York City were once the home of mammoths, sea scorpions and some of the world's first dinosaurs.

From mammoths and mastodons to bizarre sea creatures, we're digging deep into the history of towering beasts in Chicago.

From grizzly sized dogs to ferocious meat-eating dinosaurs in the suburbs, Washington, DC, has always been a land of constant conflict and battles for supremacy.

From unusual early mammals to battling dinosaurs, Denver holds the key to hidden ancient mysteries.

The slogan "Everything is Bigger in Texas" was even true in prehistoric times with its wild-west show of oversized armadillos, scimitar-toothed cats, ocean-going reptiles and more!

Long-necked sea creatures fought underwater battles, continental plates clashed, earthquakes rocked and volcanoes spewed all in the prehistoric city of Los Angeles.