. >> my name is kiki mcgrath. my grandfather was really into dinosaurs. i inherited his version of jurassic park from a bygone era. >> hi. i'm jamie. >> hi, jamie. i'm kiki. >> great to meet you, kiki, and i like your friend. it was pretty clear i was in the right place. >> this is my grandfather's creation. let's go take a look. >> that "creation" is prehistoric gardens, which sits in a lush stretch of old-growth forest, with ocean mist filtering sunlight through its towering trees. i would camp out here, and i don't camp. but be careful! giant monsters lurk. triceratops, wow. the grounds are teeming with dinosaurs. feast your eyes on 'em. there's the plate-covered stegosaurus... a towering t-rex... a soaring pteranodon and many more. each imposing creature a life-size replica of an ancient past, including this 46-foot-high, 86-foot-long brachiosaurus. >> four years from start to finish... >> amazing! >> ...to build this one. >> i just really can't believe the scale. the story of these creatures begins in 1907, in gordonsville, minnesota, where ernie nels