A sea captain's decision in 1870 that resulted in countless deaths at the entrance to Newport Bay over the next half-century. A decades-long attempt to turn Newport Harbor into a commercial port. A short-sighted agreement in 1928 to place the Orange County Airport on the banks of Upper Newport Bay. 

Newport Beach, in one form or another, has been around for more than 150 years, and over that time, there's been some terrible ideas floated, and some even implemented. In the final installment of this three-part episode, we countdown the 6th to the 1st worst ideas in Newport Beach history.