The Third Street Promenade and Santa Monica Place should be among the most popular malls in the country … but they certainly are not. Just a few blocks from the iconic Santa Monica Pier, the Promenade’s vacancy rate has been reported at 25%, although shoppers we spoke to guessed it was closer to 50%. “It’s nice and quiet and relaxing,” said Kevin Taylor, visiting from England with his wife, “But you’ve got to add businesses, or there’s no point in coming.”