This article recounts the stories of ten legendary museum artifacts that have gone missing, each with a unique history and value. The Louvre in Paris experienced its first theft in 27 years in October 2025, when thieves made off with eight pieces of jewelry worth $102 million. The Asiatic Society in Mumbai lost 345 hand-drawn maps from its vaults, while the Indian Museum saw over 5,000 valuable books disappear due to staff misconduct. The Amber Room, often referred to as the eighth wonder of the world, was dismantled during World War II and has never been recovered. Similarly, the Honjo Masamune sword, a national treasure of Japan, vanished after being handed over to the US army post-World War II. Other notable losses include the Peking Man fossils from China, which were lost during World War II, and the Jules Rimet trophy, which has been stolen twice, prompting FIFA to implement new trophy policies. Each of these cases highlights the fragility of cultural heritage and the ongoing mystery surrounding these lost treasures.