The glowing blue Nymphaeum of Emperor Tiberius.

Pompeii's less famous neighbor is still revealing her secrets.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

The world's most remote airport.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The largest stone moai on Rapa Nui.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

The Uros people live on floating reed islands in lake Titicaca.