With the best architects and interior designers at their disposal, private home and building owners spare no expense to make their structure the best of the best. From sky-high infinity pools in Monaco to 200-guest ballrooms, this list from Lincoln Property Company rounds up the top 10 most expensive apartments from all around the world. 

Coming out on top is the $400 million 30,000-square-foot Sky Penthouse in the Odeon Tower in Monaco. No big deal, but the infinity pool has a waterslide that makes this apartment look more like a water park.