This fantastical waterfall is hidden in a cave located in a cracked cliff.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This elegant arc of a waterfall marks a religious turning point.

Rising from the sea like a stone monster.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Most-visited and most-photographed slot canyon in the American Southwest.

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

An exquisite tunnel of cascading flowers.

A terrific purveyor of natural history objects and curios.

Snow-capped peaks, colorful waterfalls and stunning vistas on the edge of the Himalayas.

A golden temple atop a sacred mountain, known for its giant effigy of the revered Pu Xian.

This Tang Dynasty behemoth is the biggest Buddha in the world.