The London Arch, previously known as London Bridge in the Port Campbell National Park of Victoria, Australia is a unique and beautiful geological feature that occurs in many places around the world but at this size is relatively uncommon. This particular tourist attraction of the Great Ocean Road just outside of Port Campbell previously had two spans but the inner span collapsed in 1990.
Formed by the slow erosion of the stone by constant wind and waves, the London Arch took hundreds of thousands of years to become what is seen today. The offshore natural arch was known as London Bridge prior to the collapse but the name has changed since it is now much more of an arch than a bridge. When the inner portion collapsed two tourists were stranded requiring police rescue.