A 5.3 magnitude earthquake struck near Santorini, Greece, the latest in a series of temblors near the popular tourist destination.

More Greek islands closed schools Tuesday as hundreds of earthquakes rattled the Aegean Sea while a handful of hardy tourists enjoyed having Santorini’s stunning views to themselves.

The increase in seismic activity around the tourist island of Santorini is causing concern among officials, who have ordered schools to shut across the island and warned locals to drain their pools