Santorini, Greece

Encircling a sea-filled caldera, spectacular Santorini scores top points for dramatic beauty. Bleached white villas tumble down volcanic cliffs. Blue-domed churches rise against the sparkling sea, and bright sprays of bougainvillea add to the eye-popping canvas of color. Perched atop the black lava cliffs, the settlements of Firá and Oia are…