Conspiracy theories and occult legends surround this mysterious natural rock formation.

Huge spherical rocks in the middle of the prairie.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

A tall karst islet popularized by 007.

During the rainy season, this temple is almost entirely submerged, accessible only by boat.

An architect transformed this abandoned cement factory into his castle-like workshop.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

35,000 grape hyacinths flow like water down a garden hill.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

One of the last free public hot springs is decorated with hippie art.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

A Neolithic burial site built 1,000 years before Stonehenge.

A seemingly desolate park that belongs to two countries actually supports all kinds of wildlife.

One of the few places where inexperienced snorkelers can spot a shark.

Just another ancient, mysterious Irish stone circle.

The rustic think-space of famed naturalist John Burroughs stands exactly as he left it.

The view from this giant Stone Age toad is unexpectedly beautiful.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

This natural sea cave hides a small wonderland of natural turquoise beauty.