Imagine walking into a bank or museum to find millions in cash or priceless artifacts that vanished without a trace. It sounds like a movie, but some of history's most incredible robberies remain unsolved. These mysterious heists continue to baffle investigators and capture our imaginations. From the Antwerp Diamond Heist, where thieves stole up to $400 million in diamonds, to the Isabella Stewart Gardner Museum Heist, the largest art theft in history valued at $500 million, these unsolved crimes are truly jaw-dropping. Whether it's tunneling into bank vaults, using helicopters for daring escapes, or even involving dictators, these unsolved heists prove that sometimes truth is stranger than fiction.