This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

A British general, a suggestive tree, a map of paradise.

Fabulous formations, weird and wonderful wildlife.

A fiery crater has been burning in the Karakum Desert since 1971.

The true jewel of Africa's west coast known as "Africa's Last Eden."

A South African bar inside a hollowed out 6,000-year-old Baobab.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Towering basalt columns, a creation of fire and ice.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The most alien-looking place on Earth.

Northern Ireland's Brobdingnagian stepping stones.

Mysterious rocks that ring musically when struck.

The tallest stationary dunes on Earth also happen to sing.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Dig for your own trilobites in this goldmine of invertebrates.

The rocks in this arid basin leave trails of movement behind them.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

When ecosystems collide in the arid Southwest.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.