St Kilda Road is a street in Melbourne, Victoria, Australia. It is part of the locality of Melbourne which has the postcode of 3004, and along with Swanston Street forms a major spine of the city. St Kilda Road begins at Flinders Street, in the central business district and crosses Princes Bridge, which spans the Yarra River and connects the central business district of Melbourne with the suburb of St Kilda, ending at Carlisle Street, St Kilda. The road continues as Brighton Road, which becomes the Nepean Highway, forming a major arterial connecting the bayside suburbs and Mornington Peninsula to the city. The east side of the road to High Street, Prahran is in the municipality of the City of Melbourne while the west side of the road from Dorcas Street, and the east side south of High Street, is in the municipality of the City of Port Phillip. The road was the location of many institutions dotted along its length, and was famed for being lined with elegant mansions until the middle of the 20th century. With their replacement by numerous offices from the 1950s- 1980s, it became a commercial centre, and since the 1990s has also become home to many large scale apartment projects. From Wikipedia