Jeff Bezos' fiancée, Lauren Sanchez, posed inside the 10,000 Year Clock in a photoshoot by Vogue. The clock only ticks once a year. It also has a cuckoo alarm that goes off once every 1,000 years.

Jeff Bezos’ 10,000-Year Clock Is The Ultimate Time Machine For Humanity. Jeff Bezos has spent $42 million building a 500-foot-tall clock designed to tick just once a year—for the next 10,000 ...

Jeff Bezos is no stranger to moonshots. But this one's not heading to space—it's heading deep inside a mountain. The Amazon founder and world's third-richest man has spent a cool $42 million ...

Amazon founder Jeff Bezos pledged to donate the majority of his wealth to charity. Here's how he currently spends his $122 billion fortune, from giant underground clocks to space exploration.