You may be familiar with the phrase "art imitates nature", but here lies an example where nature imitates itself. The aptly named Wave Rock in Perth is a natural granite formation, shaped like an ocean wave.

At the height of about 15m and a length of more than 100m, this ancient rock dates back not just thousands, but millions of years. In fact, geologists approximate its age to over 2700 million years. The area around the rock is surrounded by helpful guides that educate you about this fascinating and bizarre formation. Head on down to Wave Rock, and marvel at this essentially immortal entity.