Cold temperatures won't keep Pier Five Hundred guests from enjoying the restaurant's popular patio this winter. Instead diners can enjoy the warmth of - an igloo. "We have such a wonderful patio in the summer that sits empty in the winter," manager Tom Hommes said. He said Pier Five Hundred was inspired by other restaurants that have done the same. The igloos went up about a week before Christmas, and will be around for the rest of the season. Before opening the igloos, Pier Five Hundred worked with city staff to make sure the project was up to their approval.