In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A controversial memorial at the place where Captain Cook met his violent end.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

This blowhole is supposedly caused by a trapped monster.

The former house of an anthropologist couple displays Lacandón Maya artifacts in a homey atmosphere.

Climb through the life of a Mexican hero as you ascend a 130-foot statue.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

These enigmatic columns tower over the ruins of an ancient Toltec city.

The stoutest tree in the world.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

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

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

In this Borneo cave, it's not the thousands of bats you need to worry about, it's the blankets of roaches.

Four distinctly unique gardens commemorate the POWs who lost their lives during the Sandakan Death Marches of 1945.

This tiny island in the South China Sea is crawling with venomous sea snakes.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.