Perth is the capital city of Western Australia and is the most isolated capital city of over 1,000,000 people in the world. Perth sits where the Swan River meets the southwest coast. Its suburbs lie along sandy beaches, and the huge, riverside Kings Park and Botanic Garden on Mt. Eliza offer sweeping views of the city. The Perth Cultural Centre houses the state ballet and opera companies, and occupies its own central precinct, including a theatre, art galleries and the Western Australian Museum.