Sydney is known as the Harbour City. It 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, design, it is set next to miles of ocean coastline and sandy surf beaches. Recent immigration trends have led to the cities reputation as one of the most culturally and ethnically diverse cities in Australia and the world. The city is also home to the Sydney Opera House and the Sydney Harbour Bridge, two of the most iconic structures on the planet.