Perth is one of the most isolated metropolitan areas on earth. Perth is Australia's fourth largest city. Perth dominates the Western Australian economy, despite the major mining, petroleum and agricultural export industries located elsewhere in the state.

Perth’s function as the State’s capital city, its economic base and population size have also created development opportunities for many other businesses oriented to local or more diversified markets. Perth is served by Perth Airport in the city's east for regional, domestic and international flights and Jandakot Airport in the city's southern suburbs for general aviation and charter flights. Perth has a road network with three freeways and nine metropolitan highways. The Northbridge tunnel, part of the Graham Farmer Freeway, is the only significant road tunnel in Perth. Fremantle is a port city in Western Australia, located 19 kilometres southwest of Perth, at the mouth of the Swan River on Australia's western coast.

Fremantle's modern maritime museum is located at the harbour's mouth. The city is renowned for its well-preserved architectural heritage, including convict-built colonial-era buildings, an old jetty and port, and prisons; presenting a variety and unity of historic buildings and streetscapes. Scarborough is a western suburb of Perth and is approximately 14 km by road northwest of central Perth.