Sydney Harbour Dinner Cruise on-board the Harbourside Spirit. Enjoy a delicious Buffet Dinner while cruising the spectacular sights of Sydney Harbour. Sydney is one of the world’s most liveable cities and one trip to Sydney harbour proves why it keeps it’s status year after year. Sydney harbour is one of the most beautiful in the world, with two of the most famous landmarks the Harbour Bridge and the Opera House close to each other. There are also many other wonderful attractions and landmarks in and around the harbour and the very best way to see them is from the water on a dinner cruise.