A Denver institution has been serving Rocky Mountain oysters for 125 years

Rocky Mountain oysters are deep-fried bull testicles. Denver's 125-year-old restaurant The Buckhorn Exchange is the most famous purveyor of this regional treat. The Buckhorn Exchange is part restaurant, part Wild West museum, with hundreds of taxidermy animals and Western memorabilia covering the walls. Insider’s Joe Avella stopped by to learn about this Denver institution.