Lonely Planet review
Among the thousands of options floating around you, don’t miss a visit to the grandest and most romantic castle of them all: Boldt Castle on Heart Island. This gothic gem was built by George C Boldt, who used to own Manhattan’s famous Waldorf-Astoria hotel. It was supposed to be a replica of a huge castle in Rhineland, Germany, but Boldt abandoned it partway through after his beloved wife Louise died. It was a playground for squirrels and beavers for decades, until a preservation effort in the 1970s reclaimed it and finished it the way Boldt intended.