'Will You Marry Me?'
A wedding can be an expensive enterprise, starting with the proposal preceding it. In 2016, the wedding services industry was worth $72 billion in the United States alone, with a growing percentage of that going toward popping the question, sometimes with the help of high-end planning services. In this increasingly competitive aspect of courtship, these are the proposals that stand out as particularly excessive (with one even happening at the Olympics). If there's one thing to be learned, though, it's that a lavish proposal is no guarantee of a long marriage.
Related: The Cost of a Wedding in Every State