Catherine Zeta-Jones and Michael Douglas are truly one of Hollywood's sweetest couples. The two recently returned to the exact spot in Aspen, CO, where Michael popped the question almost 16 years ago. The actress took to Instagram to post a snap of them in front of the Rocky Mountains, writing, "16 years ago, this was the spot where my husband proposed." Catherine also shared a few more photos from their romantic vacation, including one of her hitting the ski slopes. Keep scrolling to see more of their getaway, then check out how much their children have grown up.