George Frandsen bought a single piece of fossilized dinosaur poop at a rock shop during his freshman year of college. Eighteen years later, that one specimen had grown into the largest coprolite collection on Earth — certified by Guinness at 1,277 pieces, spanning 15 U.S. states and eight countries. His prized specimen, "Barnum," is believed to be from a Tyrannosaurus rex and holds its own Guinness record. So Frandsen went all in: he quit his corporate job, sold his house, and opened the Poozeum, the world's premier dinosaur-poop museum, in a Route 66 town near the Grand Canyon. Admission is free. The gift shop leans all the way in.