Modeled after a historic gladiatorial circus in Jerusalem, this dense, functioning arena helped make William Wyler's Roman epic a film legend. The Colosseum covers 18 acres, including a 1,500-foot racetrack covered in 36,000 tons of sand shipped from the Mediterranean, and took about a thousand workers to stone-carve over the course of a year. It cost a solid million to build in 1959, which is about $7.5 million in 2012 money.
Brandon is a writer and humor editor at Reader's Digest magazine. He was born in Tucson, Arizona, and wants to write a paranormal Western that begins, "First the cows turned up dead." What should the rest be about? Tell him on twitter @beardspeck.