Pinterest Facebook Twitter Email Heavy Cannons 03:00 A massive cannon salvaged from a warship answers a 500-year-old mystery. From: Don Wildman, Mysteries at the Museum and Mile-High Club, Attempted Assassinatio, Zip to Zap Related Videos Living Lights 02:25 Keeping St. Albans Safe 02:13 Pikes Peak Peanut Pusher 03:42 Crossword Code 04:04 Space-age Invention 02:47 Alcatraz Escape Attempt 02:18 Boone's Captured Daughter 02:03 Bank of America Beginnings 02:24 More Videos Secrets of the First Factory 03:26 Golfer Behind Enemy Lines 03:47 Dvorak vs QWERTY Keyboards 02:17 Denver's UFO 01:51 Pinball Wizard 03:32 Billy the Kid Imposter 03:03 First Road Maps 03:03 A Souped Up Cadillac 'RV' 03:22 Baseball Riot 01:47 Sunken Treasure 02:46 Missing Mustangs 01:42 The City of Chess 03:00 Ford vs. Ferrari 03:25 White Sands Rocket Launch 01:28 Area 51 Declassified 01:58 Opera Riot 03:46 We Recommend The Mysteries of the Bermuda Triangle 3 Reasons Why You'll Be Hooked on 'America Unearthed' Mysteries at the Museum Season 17 14 Videos Megan Fox Explores Earth's Ancient Mysteries in 'Legends of the Lost' 12 Best Destinations for UFO Fans 12 Photos Haunted Destination: Winchester Mystery House
