This is the Wave Rock (Rock Ola) in Australia. Believed to be one of the oldest rocks on Earth, with million years. Its distinctive shape is caused by erosion of 60 million years. Photo: Getty Images rocks-minerals-gems-and-geology
Designed by Frank Lloyd Wright, the cylindrical museum building, wider at the top than the bottom, was conceived as a "temple of the spirit" and is one of the century's most important architectural landmarks.