Sydney is the Harbour City, and is the largest, oldest and most cosmopolitan city in Australia with an enviable reputation as one of the world's most beautiful and liveable cities. Brimming with history, nature, culture, art, fashion, cuisine and design, it is set next to miles of ocean coastline and sandy surf beaches. The city is also home to the Sydney Opera House and the Sydney Harbour Bridge, two of the most iconic structures on the planet. The gateway to Australia, it lies on the deepest natural harbour in the world and stretches for 140 kilometres.