It sits just two hours by ferry across the Aegean Sea from the ominous round-the-clock tremors on the island of Santorini, but Elafonissi in Greece has been named the world’s best beach by Tripadvisor ...

Savonoski Crater in Alaska is a 1,600-foot mystery with no meteor debris or volcanic vents. Scientists remain baffled, unsure ...

Ngorongoro Conservation Area in Tanzania, a UNESCO World Heritage Site, boasts a vast caldera teeming with wildlife, ...