When we think of the most expensive items in the world, our minds often wander to priceless jewels, rare metals, or perhaps extravagant real estate. However, there’s a substance so rare and costly ...

The world’s most famous painting with a secret message was stolen from the Louvre over a century ago. The criminal, Vincenzo Perugia, was a handyman working at the museum, and he had two handy ...

Even for upper-middle-class Americans, some expenses just can’t be justified to your accountant or your future self. However, beyond the scope of the wealthy are the uber-rich, who have the luxury of ...