A 5.1-magnitude earthquake struck an area of the sea between the Greek islands of Amorgos and Santorini on Monday morning, according to the Geodynamics Institute of the National Observatory of Athens.

Now, millions of visitors each year come to see its dramatic scenery of whitewashed houses and blue-domed churches clinging ... and the nearby island of Amorgos, authorities said.

Now, millions of visitors each year come to see its dramatic scenery of whitewashed houses and blue-domed churches clinging ... and the nearby island of Amorgos. Although Greece is no stranger ...