- Perth is the capital city of Western Australia and is located on the Swan River. It is the fourth-largest city in Australia and has a population of around 2 million people. Perth is known for its beautiful beaches, such as Cottesloe Beach and Scarborough Beach, as well as its sunny weather and outdoor lifestyle. The city has a vibrant arts and culture scene, with numerous galleries, museums, and theaters. Some popular attractions in Perth include Kings Park and Botanic Garden, Fremantle, and the Swan Valley wine region. Perth also has a thriving culinary scene, offering a variety of dining options from local seafood to international cuisine. Overall, Perth is a modern and growing city that offers a high quality of life for its residents.